As filed with the Securities and Exchange Commission on April 28, 1999
                                              Registration No. _______

                     SECURITIES AND EXCHANGE COMMISSION

                          Washington, D.C. 20549

                                ____________

                                 FORM S-3

          REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
                                                 

                         UNION CARBIDE CORPORATION
            (Exact name of registrant as specified in its charter) 
                                New York 
                        (State of incorporation) 
                              13-1421730

                     (I.R.S. Employer Identification No.) 

39 Old Ridgebury Road                    Bruce D. Fitzgerald
Danbury, Connecticut 06817-0001          Vice President, General Counsel and
                                            Secretary
(203) 794-2000                           39 Old Ridgebury Road, 203-794-2000
(Address and telephone number            Danbury, CT  07817-0001
of registrant's principal                (Name, address and telephone number
executive offices)                        of agent for service) 
                                                 

Approximate date of commencement of proposed sale to the public:
          From time to time after the effective date of the Registration 
Statement.

          If the only securities being registered on this Form are being 
offered pursuant to dividend or interest reinvestment plans, please check the 
following box. / /

          If any of the securities being registered on this Form are to be 
offered on a delayed or continuous basis pursuant to Rule 415 under the 
Securities Act of 1933, other than securities offered only in connection with 
dividend or interest reinvestment plans, check the following box. /x/

          If this Form is filed to register additional securities for an 
offering pursuant to Rule 462(b) under the Securities Act, please check the 
following box and list the Securities Act registration statement number of the 
earlier effective registration statement for the same offering. /__/ 333-
[_______]

          If this Form is a post-effective amendment filed pursuant to Rule 
462(c) under the Securities Act, check the following box and list the 
Securities Act registration statement number of the earlier effective 
registration statement for the same offering. /__/ 333-[________]

          If delivery of the prospectus is expected to be made pursuant to 
Rule 434, please check the following box. /__/

CALCULATION OF REGISTRATION FEE 

Title of each   : Amount to  : Proposed maximum: Proposed maximum: Amount of
class of secur- : be regis-  : offering price  : aggregate offer-:Registration
itites          : tered(1)(2): per unit (3)    : ing price(2)(3) : Fee
to be registered:            :                 :                 :            
                :            :                 :                 :             
Debt            :            :                 :                 :             
Securities      :$360,000,000:    100%         : $360,000,000    :$100,080.00

1)  If any securities are issued with original issue discount, the amount
    registered is such greater amount as results in an aggregate initial
    offering price not to exceed $360,000,000.

2)  In U.S. dollars or the equivalent thereof in foreign denominated 
    currency or a composite currency.

3)  Estimated solely for the purpose of calculating the registration fee in 
    accordance with Rule 457(a) under the Securities Act of 1933 
    and exclusive of accrued interest, if any.

          The Registrant hereby amends this Registration Statement on such 
date or dates as may be necessary to delay its effective date until the 
Registrant shall file a further amendment which specifically states that this 
Registration Statement shall thereafter become effective in accordance with 
Section 8(a) of the Securities Act of 1933 or until this Registration 
Statement shall become effective on such date as the Commission, acting 
pursuant to said Section 8(a), may determine.  

          Pursuant to Rule 429 under the Securities Act of 1933, the 
prospectus included in this Registration Statement also relates to 
$140,000,000 of debt securities registered and remaining unissued under 
Registration Statement No. 333-59635 previously filed by the Registrant, in 
respect of which $42,424.02 was paid to the Commission as a filing fee.




Subject to completion dated April 28, 1999

          The information in this prospectus is not complete and may be 
changed. We may not sell these securities until the registration statement 
filed with the Securities and Exchange Commission is effective.  This 
prospectus is not an offer to sell these securities and it is not soliciting 
an offer to buy these securities in any state where the offer or sale is not 
permitted.



PROSPECTUS


                         $500,000,000 DEBT SECURITIES
                           UNION CARBIDE CORPORATION
                                                      

          Union Carbide Corporation may offer and sell from time to time debt 
securities at an initial offering price not to exceed $500,000,000 (or the 
equivalent in foreign currency).  Union Carbide may offer the debt securities 
in one or more series, in amounts, at prices and upon terms to be determined 
at the time of offering.  Union Carbide may sell the debt securities directly, 
through agents selected from time to time, or to or through underwriters or 
dealers.

          A prospectus supplement accompanying this prospectus will described 
the principal amount, maturity, rate and time of payment of interest, any 
redemption provisions, initial public offering price and  proceeds to Union 
Carbide.  The prospectus supplement will also indicate any other specific 
terms relating to the offering and sale of the debt securities, including the 
names of the underwriters or agents.

          You should read this prospectus and any accompanying prospectus 
supplement carefully before you invest.

                                                 

         Neither the Securities and Exchange Commission nor any state 
securities commission has approved or disapproved of these securities or 
determined if this prospectus is truthful or complete.  Any representation to 
the contrary is a criminal offense.
                                                 

          The date of this Prospectus is April 28, 1999. 




            When purchasing the debt securities, you should rely only on the 
information contained or incorporated by reference in this prospectus or any 
accompanying supplemental prospectus.  Union Carbide has not authorized anyone 
to provide you with different information or to make any additional 
representations.  We are not making an offer of these securities in any state 
where the offer is not permitted.  You should not assume that the information 
contained in or incorporated by reference in this prospectus and any 
prospectus supplement is accurate as of any date other than the date on the 
front of each of these documents.




                             TABLE OF CONTENTS


About This Prospectus......................................................3
Available Information......................................................3
Incorporation of Certain Documents by Reference............................3
Information about Union Carbide Corporation................................4
Use of Proceeds............................................................4
Ratio of Earnings to Fixed Charges.........................................4
Description of the Securities..............................................5
Plan of Distribution.......................................................15
Legal Opinions.............................................................16
Experts....................................................................17

                                       2




                        ABOUT THIS PROSPECTUS

          This prospectus is part of a registration statement that Union 
Carbide filed with the Securities and Exchange Commission ("SEC") utilizing a 
"shelf" registration process.  Under the "shelf" process Union Carbide may 
sell any combination of the senior unsecured debt securities described in this 
prospectus in one or more offerings up to a total dollar amount of 
$500,000,000.  This prospectus provides a general description of the senior 
unsecured debt securities Union Carbide may offer.  Each time the senior 
unsecured debt securities are sold, Union Carbide will provide a prospectus 
supplement which contains specific information about the terms of that 
offering.  The prospectus supplement may also add, update or change 
information contained in this prospectus.

                         AVAILABLE INFORMATION

          Union Carbide files annual, quarterly and special reports, proxy 
statements and other information with the SEC.  You may inspect and copy 
reports, proxy statements, and other information filed by Union Carbide at the 
public reference facilities maintained by the SEC at 450 Fifth Street, N.W., 
Washington, D.C. 20549, and at the SEC's Regional Offices at 7 World Trade 
Center, 13th Floor, New York, New York 10048 and at the Citicorp Center, 500 
West Madison Street, Suite 1400, Chicago, Illinois 60661.  Copies of such 
information may be obtained by mail from the Public Reference Section of the 
SEC at 450 Fifth Street, N.W., Washington, D.C. 20549, at prescribed rates.  
Information regarding the operation of the Public Reference Section may be 
obtained by calling 1-800-SEC-0330.  The SEC also maintains a World Wide Web 
site (http://www.sec.gov) that contains reports, proxy and information 
statements and other information regarding registrants that file 
electronically with the SEC.  In addition, you may inspect reports, proxy 
statements, and other information concerning Union Carbide at the offices of 
the New York Stock Exchange, 20 Broad Street, New York, New York 10005, the 
Chicago Stock Exchange, 440 South LaSalle Street, Chicago, Illinois 60605, and 
the Pacific Stock Exchange, 301 Pine Street, San Francisco, California 94104.  

              INCORPORATION OF CERTAIN DOCUMENTS BY REFERENCE

          The SEC allows Union Carbide to "incorporate by reference" 
information Union Carbide files with the SEC, which means Union Carbide can 
disclose important information to you by referring you to those documents.  
The information incorporated by reference is an important part of this 
prospectus, and information that Union Carbide files later with the SEC will 
automatically update and supersede this information.  Union Carbide 
incorporates by reference the following documents (File No. 1-1463):

     o  Annual Report on Form 10-K for the year ended December 31, 1998;

     o  Current Reports on Form 8-K dated January 25, 1999, March 16, 1999,
        April 7, 1999 and April 26, 1999; and 

     o  All other documents filed by Union Carbide pursuant to Section 13(a),
        13(c), 14 or 15(d) of the Securities Exchange Act of 1934 subsequent
        to the date of this prospectus and prior to the termination of the
        offering of the senior unsecured debt securities. 

                                         3



          You may request a copy of these filings other than exhibits to such 
documents (unless such exhibits are specifically incorporated by reference 
into such documents) at no cost, by writing or telephoning Union Carbide at 
the following address:  Union Carbide Corporation, Investor Relations 
Department, 39 Old Ridgebury Road, Danbury, Connecticut 06817-0001, telephone 
(203) 794-6445.

                  INFORMATION ABOUT UNION CARBIDE CORPORATION

          Union Carbide Corporation is a worldwide chemicals and polymers 
company with two business segments, Specialties & Intermediates and Basic 
Chemicals & Polymers.

          o  Specialties & Intermediates converts basic and intermediate 
chemicals into a diverse portfolio of chemicals and polymers serving 
industrial customers in many markets.  This segment also provides technology 
services, including licensing, to the oil and gas and petrochemicals 
industries.  

          o  The Basic Chemicals & Polymers segment converts hydrocarbon 
feedstocks, principally liquefied petroleum gas and naphtha, into ethylene or 
propylene used to manufacture polyethylene, polypropylene, ethylene oxide and 
ethylene glycol for sale to third-party customers, as well as propylene, 
ethylene, ethylene oxide and ethylene glycol for consumption by the 
Specialties & Intermediates segment.

          Union Carbide was incorporated in 1917 under the laws of the State 
of New York.  The principal executive offices of Union Carbide are located at 
39 Old Ridgebury Road, Danbury, Connecticut 06817-0001, telephone (203) 
794-2000.

                              USE OF PROCEEDS

          Unless otherwise indicated in an accompanying prospectus supplement, 
Union Carbide will use the net proceeds from the sale of the senior unsecured 
debt securities to retire outstanding debt and otherwise for general corporate 
purposes.  Information concerning the interest rates and maturities of Union 
Carbide's outstanding debt is set forth in the notes to the financial 
statements in the filings of Union Carbide incorporated by reference.

                   RATIO OF EARNINGS TO FIXED CHARGES

          The following table shows the ratio of earnings to fixed charges of 
Union Carbide for the periods indicated: 

                                                     Year Ended
                                        1998   1997   1996   1995   1994
Ratio of Earnings to Fixed Charges       3.8    4.5    6.2    9.4    5.4


For the purpose of calculating the ratio of earnings to fixed charges, 
earnings consist of pre-tax income of consolidated companies from continuing 
operations before adjustment for minority interests in consolidated 
subsidiaries or income or loss from equity investees plus (a) fixed charges, 

                                         4



(b) amortization of capitalized interest, (c) distributed income of equity 
investees and (d) Union Carbide's share of pre-tax losses of equity investees 
for which charges arising from guarantees are included in fixed charges less 
(a)interest capitalized, (b) preference security dividend requirements of 
consolidated subsidiaries, and (c) the minority interest in pre-tax income of 
subsidiaries that have not incurred fixed charges.  Fixed charges means the 
sum of (a) interest expensed and capitalized, (b) amortized premiums, 
discounts and capitalized expenses related to indebtedness, (c) an estimate of 
the interest within rental expense, and (d) preference security dividend 
requirements of consolidated subsidiaries. Union Carbide has a 45 percent 
equity investment in EQUATE Petrochemical Company ("EQUATE").  During 1998, 
1997, and in the last quarter of 1996, Union Carbide severally guaranteed 45 
percent of EQUATE's long-term debt and working capital financing needs.  
During the first three quarters of 1996, Union Carbide severally guaranteed up 
to $225 million of EQUATE's interim debt.  Interest charges on outstanding 
borrowings guaranteed by Union Carbide totaled $67 million, $58 million and 
$13 million for the years ended December 31, 1998, 1997 and 1996, 
respectively, and have been included, along with Union Carbide's equity in 
EQUATE's pre-tax loss for the same periods, in the calculation of the ratio of 
earnings to fixed charges.

                      DESCRIPTION OF SECURITIES 

          The senior unsecured debt securities ("Securities") will be issued 
in one or more series under an indenture or indentures ("Indenture") between 
Union Carbide and one or more trustees.  This summary is not complete and may 
not contain all of the information that is important to you.  You should refer 
to the specific terms of the Indenture for a complete statement of the terms 
and the Securities.

General

          The Indenture does not limit the amount of Securities that can be 
issued and provides that the Securities may be issued in series up to the 
aggregate principal amount which may be authorized from time to time by Union 
Carbide.  The Securities will be unsecured and will rank equally with all 
other unsecured and unsubordinated debt of Union Carbide.
          
          A prospectus supplement relating to any Securities being offered 
will include specific terms relating to the offering.  These terms will 
include some or all of the following:  

      o  the designation, aggregate principal amount, currency or composite 
         currency and denominations;

      o  the price at which such Securities will be issued and, if an index 
         formula or other method is used, the method for determining    
         amounts of principal or interest;

      o  the maturity date and other dates, if any, on which principal will 
         be payable;

      o  the interest rate (which may be fixed or variable), if any;

      o  the date or dates from which interest will accrue and on which
          interest will be payable, and the record dates for the payment of
          interest;
                                        5


      o  the manner of paying principal or interest;

      o  the place or places where principal and interest will be payable;

      o  the terms of any mandatory or optional redemption by Union   
         Carbide;

      o  the terms of any redemption at the option of the holders of the 
         Securities;

      o  whether the Securities are to be represented in whole or in part 
         by a Security in global form and, if so, the identity of the 
         depositary for any global Security;

      o  any tax indemnity provisions;

      o  if the Securities provide that payments of principal or interest 
         may be made in a currency other than that in which Securities are 
         denominated, the manner for determining such payments;

      o  the portion of principal payable upon acceleration of a discounted 
         security (as defined below);

      o  whether and upon what terms the Securities may be discharged; 

      o  any events of default or restrictive covenants in addition to or 
         in lieu of those set forth in the Indenture;

      o  provisions for electronic issuance of Securities or for Securities 
         in uncertificated form; and 

      o  any additional provisions or other terms not inconsistent with the 
         provisions of the Indenture, including any terms that may be   
         required or advisable under United States or other applicable laws 
         or regulations, or advisable in connection with the marketing of 
         the Securities.

          Securities of any series may be issued either as registered 
Securities in certificated or uncertificated form or both, as described in the 
terms of the series.  Unless otherwise set forth in the prospectus supplement, 
Union Carbide will issue the Securities in denominations of $1,000 and whole 
multiples of $1,000.  The Securities of a series may be issued in whole or in 
part in the form of one or more global Securities that will be deposited with, 
or on behalf of, a depositary identified in the prospectus supplement relating 
to the series.  Unless otherwise indicated in the prospectus supplement, the 
terms of the depositary arrangement with respect to any Securities of a series 
specified in the prospectus supplement as being represented by global 
Securities will be as described below under "Global Securities." 

          Registration of transfer of the Securities may be requested upon 
surrender of the certificate representing the Securities at any agency of 
Union Carbide maintained for that purpose and upon fulfillment of all other
requirements of the agent. 
                                   6



          Securities may be issued under the Indenture as discounted 
securities to be offered and sold at a substantial discount from the principal 
amount.   Special United States federal income tax and other considerations 
will be described in the prospectus supplement relating to the discounted 
securities.  "Discounted Security" means a Security where the amount of 
principal due upon acceleration is less than the stated principal amount.


Covenants

          The Securities will not be secured by any properties or assets and 
will represent unsecured debt of Union Carbide. Since secured debt ranks ahead 
of unsecured debt, the limitation on liens and the limitation on 
sale-leaseback transactions place some restrictions on Union Carbide's ability 
to incur additional secured debt or its equivalent when the asset securing the 
debt is a material manufacturing facility in the United States.  The 
limitations are subject to a number of qualifications and exceptions described 
below.  Union Carbide cannot assure you that a facility subject to the 
limitations at any time will continue to be subject to those limitations at a 
later time.

          Unless otherwise indicated in a prospectus supplement, the covenants 
contained in the Indenture and the Securities do not afford holders of the 
Securities protection in the event of a highly leveraged or other transaction 
involving Union Carbide that may adversely affect holders of the Securities.

     Definitions.

          "Attributable Debt" for a lease means, as of the date of 
determination, the present value of net rent for the remaining term of the 
lease.  Rent shall be discounted to present value at a discount rate that is 
compounded semi-annually.   The discount rate shall be 10% per year or, if 
Union Carbide elects, the discount rate shall be equal to the weighted average 
Yield to Maturity of the Securities under the Indenture.  Such average shall 
be weighted by the principal amount of the Securities of each series or, in 
the case of discounted securities, the amount of principal that would be due 
as of the date of determination if payment of the Securities were accelerated 
on that date.

          Rent is the lesser of (a) rent for the remaining term of the lease 
assuming it is not terminated or (b) rent from the date of determination until 
the first possible termination date plus the termination payment then due, if 
any.  The remaining term of a lease includes any period for which the lease 
has been extended.   Rent does not include (1) amounts due for maintenance, 
repairs, utilities, insurance, taxes, assessments and similar charges or (2) 
contingent rent, such as that based on sales.  Rent may be reduced by the 
discounted present value of the rent that any sublessee must pay from the date 
of determination for all or part of the same property.  If the net rent on a 
lease is not definitely determinable, Union Carbide may estimate it in any 
reasonable manner.

          "Consolidated Net Tangible Assets" means total assets less (a) total 
current liabilities (excluding Debt due within 12 months) and (b) goodwill, as 
                                    7



reflected in Union Carbide's most recent consolidated balance sheet preceding 
the date of a determination under clause (9) of the "Limitation on Liens" 
covenant.

          "Debt" means any debt for borrowed money or any guarantee of such a 
debt.  

          "Lien" means any mortgage, pledge, security interest or lien.

          "Long-Term Debt" means Debt that by its terms matures on a date more 
than 12 months after the date it was created or Debt that the obligor may 
extend or renew without the obligee's consent to a date more than 12 months 
after the date the Debt was created.

          "Principal Property" means any manufacturing facility located in the 
United States (excluding territories and possessions), except any such 
facility that in the opinion of the board of directors of Union Carbide or any 
authorized committee of the board is not of material importance to the total 
business conducted by Union Carbide and its consolidated Subsidiaries.

          "Restricted Property" means any Principal Property or any shares of 
stock of a Restricted Subsidiary, in each case now owned or hereafter acquired 
by Union Carbide or a Restricted Subsidiary.  At March 31, 1999, "Restricted 
Property" includes manufacturing facilities of Union Carbide at Norco, LA; 
Taft, LA; Seadrift, TX; Texas City, TX; Institute, WV; and South Charleston, 
WV.  

          "Restricted Subsidiary" means a Wholly-Owned Subsidiary that has 
substantially all of its assets located in the United States (excluding 
territories or possessions) or Puerto Rico and owns a Principal Property.  

          "Sale-Leaseback Transaction" means an arrangement where Union 
Carbide or a Restricted Subsidiary now owns or later acquires a Principal 
Property, transfers it to a person, and then leases it back from that person.  

          "Subsidiary" means a corporation a majority of whose Voting Stock is 
owned by Union Carbide or a Subsidiary.

          "Voting Stock" means capital stock having voting power under 
ordinary circumstances to elect directors.  

          "Wholly-Owned Subsidiary" means a corporation all of whose Voting 
Stock is owned by Union Carbide or a Wholly-Owned Subsidiary.

          "Yield to Maturity" means the yield to maturity on a Security at the 
time of its issuance or at the most recent determination of interest on the 
Security.

          Limitation on Liens. Union Carbide will not, and will not permit any 
Restricted Subsidiary to, incur a Lien on Restricted Property to secure a Debt 
unless: 

 
          (1)  the Lien equally and ratably secures the Securities and the 
               Debt.  The Lien may equally and ratably secure the Securities 
               and any other obligation of Union Carbide or a Subsidiary. 

                                         8



               The Lien may not secure an obligation of Union Carbide that is 
               subordinated to the Securities; 

          (2)  the Lien secures Debt incurred to finance all or some of the 
               purchase price or the cost of construction or improvement of 
               property of Union Carbide or a Restricted Subsidiary.  The 
               Lien may not extend to any other Restricted Property owned by 
               Union Carbide or a Restricted Subsidiary at the time the Lien 
               is incurred.  However, in the case of any construction or 
               improvement, the Lien may extend to unimproved real property 
               used for the construction or improvement.  The Debt secured by 
               the Lien may not be incurred more than one year after the
               later of the (a) acquisition, (b) completion of construction 
               or improvement or (c) commencement of full operation, of the 
               property subject to the Lien; 

          (3)  the Lien is on property of a corporation at the time the 
               corporation merges into or consolidates with Union Carbide or 
               a Restricted Subsidiary; 

          (4)  the Lien is on property at the time Union Carbide or a 
               Restricted Subsidiary acquires the property; 

          (5)  the Lien is on property of a corporation at the time the 
               corporation becomes a Restricted Subsidiary; 

          (6)  the Lien secures Debt of a Restricted Subsidiary owing to
               Union Carbide or another Restricted Subsidiary;

          (7)  the Lien is in favor of a government or governmental entity 
               and secures (a) payments pursuant to a contract or statute or 
               (b) Debt incurred to finance all or some of the purchase price 
               or cost of construction or improvement of the property subject 
               to the Lien; 

          (8)  the Lien extends, renews or replaces in whole or in part a 
               Lien("existing Lien") permitted by any of clauses (1) through 
               (7).  The Lien may not extend beyond (a) the property subject 
               to the existing Lien and (b) improvements and construction on 
               such property.  However, the Lien may extend to property that 
               at the time is not Restricted Property.  The Debt secured by 
               the Lien may not exceed the Debt secured at the time by the 
               existing Lien unless the existing Lien or a previous Lien 
               was incurred under clause (1) or (6); or 

          (9)  the Debt plus all other Debt secured by Liens on Restricted 
               Property at the time does not exceed 10% of Consolidated Net 
               Tangible Assets.  However, the following Debt shall be 
               excluded from all other Debt in the determination: (a) Debt 
               secured by a Lien permitted by any of clauses (1) through (8) 
               and (b) Debt secured by a Lien incurred prior to the date of 
               the Indenture that would have been permitted by any of those 
               clauses if the Indenture had been in effect at the time the 
               Lien was incurred.  Attributable Debt for any lease permitted 
               by clause (4) of the "Limitation on Sale and Leaseback"
               covenant must be included in the determination and treated as 

                                          9



               Debt secured by a Lien on Restricted Property not otherwise 
               permitted by any of clauses (1) through (8).

          In general, clause (9) above, sometimes called a "basket" clause, 
permits Liens to be incurred that are not permitted by any of the exceptions 
listed in clauses (1) through (8) above if the Debt secured by all such 
additional Liens does not exceed 10% of Consolidated Net Tangible Assets at 
the time.

          Limitation on Sale and Leaseback. Union Carbide will not, and will 
not permit any Restricted Subsidiary to, enter into a Sale-Leaseback 
Transaction unless: 

          (1)  the lease has a term of three years or less; 

          (2)  the lease is between Union Carbide and a Restricted Subsidiary 
               or between Restricted Subsidiaries; 

          (3)  Union Carbide or a Restricted Subsidiary under clauses (2) 
               through (8) of the "Limitation on Liens" covenant could create 
               a Lien on the property to secure Debt at least equal in amount 
               to the Attributable Debt for the lease; 

          (4)  Union Carbide or a Restricted Subsidiary under clause (9) of 
               the "Limitation on Liens" covenant could create a Lien on the 
               property to secure Debt at least equal in amount to the 
               Attributable Debt for the lease; or

          (5)  Union Carbide or a Restricted Subsidiary within 180 days of 
               the effective date of the lease retires Long-Term Debt of 
               Union Carbide or a Restricted Subsidiary at least equal in 
               amount to the Attributable Debt for the lease.  A Debt is 
               retired when it is paid, canceled or defeased.  However, Union
               Carbide or a Restricted Subsidiary may not receive credit for 
               retirement of:  Debt that is retired at maturity or through 
               mandatory redemption; Debt of Union Carbide that is 
               subordinated to the Securities; or Debt, if paid in cash, that 
               is owned by Union Carbide or a Restricted Subsidiary.

          In clauses (3) and (4) above, Sale-Leaseback Transactions and Liens 
are treated equally.  Therefore, if Union Carbide or a Restricted Subsidiary 
could create a Lien on a property, it may enter into a Sale-Leaseback 
Transaction to the same extent.

Consolidation, Merger or Transfer of Assets

          Union Carbide will not consolidate with or merge into, or transfer 
all or substantially all of its assets to, any person, unless

          (1)  the person is organized under the laws of the United States or
               a State within the United States; 

          (2)  the person assumes by supplemental indenture all the
               obligations of Union Carbide under the Indenture, the
               Securities; 

          (3)  immediately after the transaction no default exists; and

                                       10




          (4)  if, as a result of the transaction, a Restricted Property
               would become subject to a Lien not permitted by the
               "Limitation on Liens" covenant, Union Carbide or such person
               secures the Securities equally and ratably with or prior to
               all obligations secured by the Lien.

          The successor will be substituted for Union Carbide, and all 
obligations of Union Carbide under the Indenture and the Securities will 
terminate.   


Exchange of Securities

          Unless otherwise set forth in the accompanying prospectus 
supplement, certificates for Securities may be exchanged for an equal 
aggregate principal amount of certificates for Securities of the same series 
and date of maturity in such authorized denominations as may be requested upon 
surrender of the certificates at an agency of Union Carbide maintained for 
such purpose and upon fulfillment of all other requirements of the agent.

Defaults and Remedies

          An "Event of Default" regarding a series of Securities will occur 
if: 

          (1)  Union Carbide fails to make any payment of interest on any 
               Securities of the series when the payment becomes due 
               and continues not to make such payment for a period of 10
               days;

          (2)  Union Carbide fails to make a payment of the principal of any 
               Securities of the series when the payment becomes due 
               at maturity or upon redemption, acceleration or otherwise; 

          (3)  Union Carbide fails to perform any of its other 
               agreements relating to the series and such failure continues 
               for 90 days after the notice described below;

          (4)  Union Carbide pursuant to or within the meaning of any
               bankruptcy law (as defined below): 

               (A)  initiates a voluntary case, 

               (B)  consents to the entry of an order for relief against it 
                    in an involuntary case, 

               (C)  consents to the appointment of a custodian (as defined
                    below) for it or for all or substantially all of its
                    property, or

               (D)  makes a general assignment for the benefit of its 
                    creditors;

          (5)  a court of competent jurisdiction enters an order or decree 
               under any bankruptcy law that: 

                                       11




               (A)  is for relief against Union Carbide in an involuntary
                    case, 

               (B)  appoints a custodian for Union Carbide or for all or 
                    substantially all of its property, or 

               (C)  orders the liquidation of Union Carbide;
                    and the order or decree remains unstayed and in effect 
                    for 60 days; or

          (6)  any other Event of Default provided for in the series occurs.

          The term "bankruptcy law" means Title 11, U.S. Code or any similar 
Federal or State law for the relief of debtors. The term "custodian" means any 
receiver, trustee, assignee, liquidator or a similar official under any 
bankruptcy law.  

          Failure to perform under clause (3) above is not an Event of Default 
until the trustee or the holders of at least 25% of the principal amount of 
the series notify Union Carbide of the failure and Union Carbide does not cure 
the default within the time specified after receipt of the notice.

          Subject to certain limitations, holders of a majority in principal 
amount of the Securities of the series may direct the trustee in its exercise 
of any trust or power.  The trustee may withhold from securityholders of the 
series notice of any continuing default (except a default in payment of 
principal or interest) if the trustee determines that withholding notice is in 
the securityholders interest.  

          The Indenture does not have a cross-default provision.  Thus, a 
default by Union Carbide or a Subsidiary on any other debt would not 
constitute an Event of Default.

          If an Event of Default occurs and continues on a series, the trustee 
or the holders of at least 25% of the principal amount of the series may 
declare the principal and interest on all Securities of the series due and 
payable immediately upon notice to Union Carbide.  If an Event of Default 
occurs and continues on a series, the trustee or, upon satisfaction of certain 
conditions, a holder may pursue any available remedy to collect the principal 
and interest due on the series, enforce the performance of any provisions 
regarding the series or protect the rights of the trustee and holders of the 
series.  The trustee may require indemnity satisfactory to it before it 
enforces the Indenture or the Securities of the series.

Amendments and Waivers

          Unless the bond resolution establishing the terms of a series 
provides otherwise, the Indenture and the Securities may be amended, and any 
default may be waived as follows:

          The Securities and the Indenture may be amended with the consent of 
the holders of a majority in principal amount of the Securities of all series 
affected voting as one class.  As discussed above under "General," Union 
Carbide has the right to issue an unlimited amount of Securities under the 

                                12



Indenture.  A default on a series may be waived with the consent of the 
holders of a majority in principal amount of the Securities of the series.  
However, without the consent of each Securityholder affected, no amendment or 
waiver may

          (1)  reduce the amount of Securities whose holders must consent to
               an amendment or waiver, 

          (2)  reduce the interest on or change the time for payment of
               interest on any Security, 

          (3)  change the fixed maturity of any Security, 

          (4)  reduce the principal of any non-discounted security or reduce
               the amount of principal of any discounted security that would
               be due on acceleration, 

          (5)  change the currency in which principal or interest on a
               Security is payable, or 

          (6)  waive any default in payment of interest on or principal of a
               Security.  

          The Indenture or the Securities may be amended without the consent 
of the securityholder as follows:  

          (1)  to cure any ambiguity, omission, defect or inconsistency; 

          (2)  to provide for assumption of Union Carbide's obligations to
               securityholders in the event of a merger or consolidation 
               requiring such assumption; 

          (3)  to provide that specific provisions of the Indenture not apply
               to a series of Securities not previously issued; 

          (4)  to create a series and establish its terms; 

          (5)  to provide for a separate trustee for one or more series; or

          (6)  to make any change that does not materially adversely affect
               the rights of any securityholder.

Legal Defeasance and Covenant Defeasance

          Securities of a series may be discharged in accordance with their 
terms and, unless the bond resolution establishing the terms of the series 
provides otherwise, as set forth below.  Union Carbide at any time may 
terminate as to a series all of its obligations (except for certain 
obligations with respect to the defeasance trust and obligations to register 
the transfer or exchange of a Security, to replace destroyed, lost or stolen 
Securities, and to maintain agencies in respect of the Securities) with 
respect to the Securities of the series and the Indenture ("legal 
defeasance").  Union Carbide may also, at any time, terminate as to a series 
its obligations with respect to the Securities under the covenants described 
under "Covenants" ("covenant defeasance").  

                                  13




          Union Carbide may exercise its legal defeasance option even after 
the exercise of its covenant defeasance option.  If Union Carbide exercises 
its legal defeasance option, a series may not be accelerated because of an 
Event of Default.  If Union Carbide exercises its covenant defeasance option, 
a series may not be accelerated by reference to the covenants described under 
"Covenants."

          To exercise either the legal defeasance or covenant defeasance 
option regarding a series, Union Carbide must deposit in trust (the 
"defeasance trust") with the trustee money or U.S. government obligations for 
the payment of principal, premium, if any, and interest on the Securities of 
the series to redemption or maturity and must comply with certain other 
conditions.  In particular, Union Carbide must obtain an opinion of tax 
counsel that the defeasance will not result in recognition of any gain or loss 
to holders for Federal income tax purposes.  "U.S. government obligations" are 
direct obligations of the United States of America which have the full faith 
and credit of the United States of America pledged for payment and which are 
not callable at the issuer's option, or certificates representing an ownership 
interest in such obligations.

Global Securities

          Global Securities may be issued in certificated or uncertificated 
form and in either temporary or permanent form.  If Securities of a series are 
to be issued as global Securities, one or more global Securities will be 
issued in a denomination or aggregate denominations equal to the aggregate 
principal amount of outstanding Securities of the series to be represented by 
the global Security or Securities.

          Ownership of beneficial interests in global Securities will be 
limited to persons that have accounts with the depositary ("participants") or 
persons that may hold interests through participants.  Ownership interests in 
global Securities will be shown on, and the transfer of that ownership 
interest will be effected only through, records maintained by the depositary 
or its nominee for such global Securities regarding a participant's interest 
and records maintained by participants regarding interests of persons other 
than participants.

          Unless otherwise stated in a prospectus supplement, payment of 
principal of and any premium and interest on the book-entry Securities 
represented by a global Security will be made to the depositary or its 
nominee, as the case may be, as the sole registered owner and the sole holder 
of the book-entry Securities represented thereby for all purposes under the 
Indenture.  Neither Union Carbide or the trustee, nor any agent of Union 
Carbide or the trustee, will have any responsibility or liability for any acts 
or omissions of the depositary, for any records of the depositary relating to 
beneficial ownership interests in any global Security or for any transactions 
between the depositary and beneficial owners.

          Upon receipt of any payment of principal of or any premium or 
interest on a global Security, the depositary will immediately credit, on its 
book-entry registration and transfer system, the accounts of participants 
with payments in amounts proportionate to their respective beneficial 
interests in the principal amount of such global Security as shown on the 
records of the depositary.  Payments by participants to owners of beneficial 
interests in global Securities held through such participants will be governed 

                                    14



by standing instructions and customary practices, as is now the case with 
securities held for customer accounts registered in "street name," and will be 
the sole responsibility of such participants.

          Unless otherwise stated in a prospectus supplement, global 
Securities will not be transferred except as a whole by the depositary to a 
nominee of the depositary.  Global Securities will be exchangeable only if:

          (i)  the depositary notifies Union Carbide that it is unwilling or
               unable to continue as depositary for such global Securities or
               if at any time the depositary ceases to be a clearing agency
               registered under the Securities Exchange Act of 1934, as
               amended (the "Exchange Act"), 

         (ii)  Union Carbide in its sole discretion determines that such
               global Securities shall be exchangeable for definitive
               Securities in registered form, or

        (iii)  an Event of Default with respect to the series of Securities
               represented by such global Securities has occurred and is
               continuing.  Any global Security that is exchangeable
               pursuant to the preceding sentence shall be exchangeable for
               registered securities issuable in denominations of $1,000
               and integral multiples thereof and registered in such names
               as the depositary holding such global Security shall direct. 

Subject to the foregoing, the global Security is not exchangeable, except for 
a global Security of like denomination to be registered in the name of the 
depositary or its nominee.

          As long as the depositary for global Securities of a series, or its 
nominee, is the registered owner of the global Securities, the depositary or 
nominee, as the case may be, will be considered the sole holder of Securities 
represented by the global Securities for the purposes of receiving payment on 
such global Securities, receiving notices and for all other purposes under the 
Indenture and the global Securities.  Except as provided above, owners of 
beneficial interests in global Securities of a series will not be entitled to 
receive physical delivery of Securities of such series in definitive form and 
will not be considered the holders thereof for any purpose under the 
Indenture.  Accordingly, each person owning a beneficial interest in a global 
Security must rely on the procedures of the depositary and, if such person is 
not a participant, on the procedures of the participant through which such 
person owns its interest, to exercise any rights of a holder under the 
Indenture.  The depositary may grant proxies and otherwise authorize partici-
pants to give or take any request, demand, authorization, direction, notice, 
consent, waiver or other action which a holder is entitled to give or take 
under the Indenture.  Union Carbide understands that under existing industry 
practices, in the event that Union Carbide requests any action of holders or 
that an owner of a beneficial interest in such a global Security desires to 
give or take any action which a holder is entitled to give or take under the 
Indenture, the depositary would authorize the participants holding the 
relevant beneficial interests to give or take such action, and such partici-
pants would authorize beneficial owners owning through such participants to 
give or take such action or would otherwise act upon the instructions of 
beneficial owners owning through them.

                                   15




          Unless otherwise specified in a prospectus supplement relating to 
Securities of a series to be issued as global Securities, the depositary will 
be The Depository Trust Company ("DTC").  DTC has advised Union Carbide that 
it is a limited-purpose trust company organized under the laws of the State of 
New York, a member of the Federal Reserve System, a "clearing corporation" 
within the meaning of the New York Uniform Commercial Code, and a "clearing 
agency" registered under the Exchange Act.  DTC was created to hold the 
securities of its participants and to facilitate the clearance and settlement 
of securities transactions among its participants in such securities through 
electronic book-entry changes in accounts of the participants, thereby 
eliminating the need for physical movement of securities certificates. DTC's 
participants include securities brokers and dealers (which may include the 
underwriters, dealers or agents with respect to the Securities), banks, trust 
companies, clearing corporations, and certain other organizations, some of 
whom (and/or their representatives) own DTC.  Access to DTC's book-entry 
system is also available to others, such as banks, brokers, dealers and trust 
companies that clear through or maintain a custodial relationship with a 
participant either directly or indirectly.

Trustee

          The trustee for a series of Securities will be named in the 
prospectus supplement for the series.

          Union Carbide may remove the trustee if certain events occur.  Union 
Carbide also may remove the trustee with or without cause if Union Carbide 
notifies the trustee six months in advance and if no Default occurs during the 
six-month period.


                         PLAN OF DISTRIBUTION

          Union Carbide may sell Securities in any of the following ways:

          (1)  through underwriters or dealers; 
          (2)  directly to one or more purchasers; or 
          (3)  through agents. 

          The prospectus supplement regarding the Securities being offered by 
the prospectus supplement will indicate the terms of the offering of the 
Securities, including the name or names of any underwriters or agents, the 
purchase price of the Securities and the proceeds to Union Carbide from the 
sale of the Securities.  The prospectus supplement will also indicate any 
underwriting discounts, commissions and other items that make up the 
underwriters' compensation, any initial public offering price and any 
discounts or concessions allowed or reallowed or paid to dealers and any 
securities exchanges on which such Securities may be listed.   Any underwriter 
or agent may be deemed to be an underwriter as that term is defined in the 
Securities Act of 1933.

          If underwriters are used in the sale of Securities, the Securities 
will be acquired by the underwriters for their own account and may be resold 
from time to time in one or more transactions, including negotiated 
transactions, at a fixed public offering price or at varying prices determined 
at the time of sale.  The Securities may be offered to the public either 
through underwriting syndicates (which may be represented by managing 

                                  16



underwriters designated by Union Carbide), or directly by one or more 
underwriters acting alone.  Unless otherwise indicated in the prospectus 
supplement, the obligations of the underwriters to purchase the Securities 
will be subject to certain conditions, and the underwriters will be obligated 
to purchase all of the Securities if any are purchased.  Any initial public 
offering price and any discounts or concessions allowed or reallowed or paid 
to dealers may be changed from time to time.

          The Securities may be sold directly by Union Carbide or through 
agents selected by Union Carbide from time to time. The prospectus supplement 
regarding any Securities sold in this manner will indicate the name of any 
agent involved in the offer or sale of the Securities as well as any 
commissions payable by Union Carbide to the agent.  Unless otherwise indicated 
in the prospectus supplement, the agent will act on a best efforts basis for 
the period of its appointment.

          If dealers are used in the sale of any Securities, Union Carbide 
will sell the Securities to the dealers, as principal.  Any dealer may then 
resell the Securities to the public at varying prices to be determined by the 
dealer at the time of resale.  The name of any dealer and the terms of the 
transaction will be indicated in the prospectus supplement regarding the 
Securities being offered by that prospectus.

          If so indicated in the prospectus supplement, Union Carbide will 
authorize agents, underwriters or dealers to solicit offers by certain 
specified institutions to purchase Securities from Union Carbide at the public 
offering price set forth in the prospectus supplement pursuant to delayed 
delivery contracts providing for payment and delivery on a specified date in 
the future.  Such contracts will be subject only to those conditions set forth 
in the prospectus supplement and the prospectus supplement will set forth the 
commission payable for the solicitation of such contracts.

          It has not been determined whether any Securities will be listed on 
a securities exchange.  Underwriters will not be obligated to make a market in 
any Securities.  Union Carbide cannot predict the activity of trading in, or 
liquidity of, any Securities.

          Agents, underwriters and dealers may be entitled, under agreements 
entered into with Union Carbide, to indemnification by Union Carbide against 
certain civil liabilities, including liabilities under the Securities Act of 
1933 or to contribution with respect to payments which the agents, 
underwriters or dealers may be required to make in respect thereof.  Agents, 
underwriters and dealers may be customers of, engage in transactions with, or 
perform services for Union Carbide in the ordinary course of business.





                             LEGAL OPINIONS

          Certain legal matters in connection with the Securities will be 
passed upon for Union Carbide by Bruce D. Fitzgerald, Vice-President, General 
Counsel and Secretary of Union Carbide or by Phyllis Savage, Assistant General 
Counsel and Chief Finance and Securities Counsel of Union Carbide, or by other 
counsel selected by Union Carbide, and for the agents, underwriters and 

                                   17



dealers by Davis Polk & Wardwell, New York, NY, or by other counsel 
satisfactory to the relevant agents, underwriters or dealers.  At March 31, 
1999, Mr. Fitzgerald owned 8,050 shares of Union Carbide's common stock 
including shares allocated pursuant to Union Carbide's employee stock 
ownership plan and Ms. Savage owned 4,416 shares of Union Carbide common stock 
including shares allocated pursuant to Union Carbide's employee stock 
ownership plan.  At March 31, 1999, Mr. Fitzgerald held options to purchase 
95,300 shares of Union Carbide's common stock and Ms. Savage held options to 
purchase 33,700 shares of Union Carbide's common stock.

                                 EXPERTS

          Union Carbide's consolidated financial statements and schedule as of 
December 31, 1998 and 1997 and for each of the years in the three-year period 
ended December 31, 1998 incorporated by reference herein have been 
incorporated herein in reliance upon the reports of KPMG LLP, independent 
auditors, incorporated by reference herein, and upon the authority of said 
firm as experts in accounting and auditing.  

                                        18




                                  PART II
                   INFORMATION NOT REQUIRED IN PROSPECTUS 

Item 14.  Other Expenses of Issuance and Distribution.* 

SEC filing fee............................  $142,504
Accounting fees and expenses..............     5,000
Legal fees and expenses...................    25,000
Trustee's fees and expenses...............    20,000
Blue sky fees and expenses................     5,000
Printing expenses.........................    10,000
Miscellaneous.............................    23,000
Total.....................................  $230,504

*Except for the SEC filing fee, all expenses are estimated.  The above 
expenses relate to $500,000,000.00 of debt securities, which includes those 
carried forward from Registration Statement No. 333-59635.

Item 15.  Indemnification of Directors and Officers.

          Sections 721 through 726 of the New York Business Corporation Law 
provide for indemnification of directors and officers.  If a director or 
officer is successful on the merits or otherwise in a legal proceeding, the 
director must be indemnified to the extent the director was successful.  
Additionally, indemnification is permitted in both third-party and derivative 
suits if the director acted in good faith and for a purpose the director 
reasonably believed was in the best interests of Union Carbide, and if, in the 
case of a criminal proceeding, the director had no reasonable cause to believe 
his conduct was unlawful.  

          Indemnification under this provision applies to judgments, fines, 
amounts paid in settlement and reasonable expenses, in the case of third party 
actions, and amounts paid in settlement and reasonable expenses, in the case 
of derivative actions.  In a derivative action, however, a director or officer 
may not be indemnified for amounts paid to settle such a suit or for any 
claim, issue or matter as to which such person shall have been adjudged liable 
to Union Carbide absent a court determination that the person is fairly and 
reasonably entitled to indemnity.  

          Notwithstanding the failure of Union Carbide to provide 
indemnification and despite any contrary resolution of the board or 
shareholders, indemnification shall be awarded by the proper court pursuant to 
Section 724 of the New York Business Corporation Law.

          Under New York law, expenses may be advanced upon receipt of an 
undertaking by or on behalf of the director or officer to repay the amounts in 
the event the recipient is ultimately found not to be entitled to 
indemnification.  The advance is conditioned only upon receipt of the 
undertaking and not upon a finding that the officer or director has met the 
applicable indemnity standards.  

          Article V of Union Carbide's By-Laws requires it to indemnify each 
of its past, present and future directors, officers and employees to the 
fullest extent permitted by law for any and all costs and expenses resulting 
from or relating to any suit or claim arising out of his service to Union 
Carbide or to other organizations at Union Carbide's request.  

                                     II-1




          Union Carbide has entered into indemnity agreements with each of its 
directors and officers which require Union Carbide, among other things, to 
indemnify each director or officer for all costs and expenses of suits and 
claims (to the fullest extent permitted by law), and to advance to each 
director or officer the costs and expenses of defending any suit or claim if 
such director or officer undertakes to pay back such advances to the extent 
required by law.  These provisions do not apply to any suit or claim 
voluntarily commenced by the director or officer against Union Carbide, unless 
the institution of such proceeding was approved by a majority of the Board of 
Directors or the director or officer is successful on the merits in such 
proceeding or the proceeding was brought by the director or officer to enforce 
rights to indemnity, payment or reimbursement under the indemnity agreement.  
In the event of a change in control or potential change in control of Union 
Carbide, Union Carbide, at the request of a director or officer is required to 
create and fund a trust for the benefit of each director or officer in an 
amount equal to all costs and expenses relating to any suit or claim.

          Section 402 of the New York Business Corporation Law permits a New 
York corporation to include in its certificate of incorporation provisions 
eliminating the personal liability of directors to the corporation or its 
shareholders for any breach of duty in such capacity unless a judgment or 
final adjudication adverse to the director establishes that his acts or 
omissions were in bad faith or involved intentional misconduct or a knowing 
violation of law or that he personally gained a financial profit or other 
advantage to which he was not legally entitled or his acts violated Section 
719 of the New York Business Corporation Law.  The certificate of 
incorporation of Union Carbide contains a provision eliminating the personal 
liability of its directors to Union Carbide or its shareholders except to the 
extent such liability may not be eliminated by law.

          Union Carbide carries directors' and officers' insurance which 
covers its directors and officers against certain liabilities they may incur 
when acting in their capacity as directors or officers of Union Carbide.  In 
addition, Section 6 of the Underwriting Agreement (Exhibit 1 hereto) provides 
for the indemnification of the officers and directors of Union Carbide against 
certain liabilities. 

Item 16.  Exhibits.

          All exhibits are filed herewith, except as indicated.

1.        Form of Standard Underwriting Agreement Provisions (including form
          of Terms Agreement) dated July 1998.  See Exhibit 1 to Registration
          Statement 333-59635, which is incorporated herein by reference.

4.1.1     Form of Indenture to be used by Union Carbide Corporation to issue 
          Securities of Union Carbide Corporation in series. See Exhibit 
          1 of Post- Effective Amendment No. 1 to Registration No. 33-63412,
          which is incorporated by reference herein.

4.1.2     Indenture, dated as of June 1, 1995, between Union Carbide
          Corporation and The Chase Manhattan Bank (formerly Chemical Bank),
          Trustee.  See Exhibit 4.1.2 to Registration No. 33-60705, which is 
          incorporated by reference herein.

                                    II-2




4.2       Forms of Securities see Exhibits A and B to Exhibit 4.1.1
          above.

5         Opinion of Phyllis Savage, Assistant General Counsel and Chief
          Finance and Securities Counsel of Union Carbide Corporation.

12        Statement re: Computation of Ratio of Earnings to Fixed Charges of 
          Union Carbide- Five Years ended December 31, 1998.

23.1      Consent of KPMG LLP, independent auditors.

23.2      Consent of Counsel (included in Exhibit 5).

24        Powers of attorney (included on the signature pages hereof).

25.1      Statement of Eligibility under the Trust Indenture Act of 1939 
          (Form T-1) of The Chase Manhattan Bank, Trustee.

25.2      Statement of Eligibility under the Trust Indenture Act of 1939 
          (Form T-1) of The Bank of New York, Trustee.  

Item 17.  Undertakings.

          The undersigned registrant hereby undertakes: 

          (1)  To file, during any period in which offers or sales are being 
               made, a post-effective amendment to this Registration 
               Statement:
               (i)    To include any prospectus required by Section 10(a)(3) 
                      of the Securities Act of 1933, unless the information 
                      required to be included in such post-effective 
                      amendment is contained in a periodic report filed by 
                      Union Carbide pursuant to Section 13 or Section 15(d) 
                      of the Securities Exchange Act of 1934 and incorporated 
                      herein by reference.

               (ii)   To reflect in the prospectus any facts or events 
                      arising after the effective date of the Registration 
                      Statement(or the most recent post-effective amendment 
                      thereof) which, individually or in the aggregate, 
                      represent a fundamental change in the information set 
                      forth in the Registration Statement, unless the 
                      information required to be included in such 
                      post-effective amendment is contained in a periodic 
                      report filed by Union Carbide pursuant to Section 13 or 
                      Section 15(d) of the Securities Exchange Act of 1934 
                      and incorporated herein by reference.  Notwithstanding 
                      the foregoing, any increase or decrease in volume of 
                      securities offered (if the total dollar value of 
                      securities offered would not exceed that which was 
                      registered) and any deviation from the low or high end 
                      of the estimated maximum offering range may be 
                      reflected in the form of prospectus filed with the 
                      Commission pursuant to Rule 424(b) if, in the 
                      aggregate, the changes in volume and price represent no 
                      more than 20 percent change in the maximum aggregate

                                    II-3




                      offering price set forth in the "Calculation of
                      Registration Fee" table in the effective registration
                      statement.
               (iii)  To include any material information with respect to the 
                      plan of distribution not previously disclosed in the 
                      Registration Statement or any material change to such 
                      information in the Registration Statement.


          (2)  That, for the purpose of determining any liability under the 
               Securities Act of 1933, each such post-effective amendment 
               shall be deemed to be a new registration statement relating to 
               the securities offered therein, and the offering of such 
               securities at that time shall be deemed to be the initial bona 
               fide offering thereof. 

          (3)  To remove from registration by means of a post-effective 
               amendment any of the securities being registered which remain 
               unsold at the termination of the offering.

          (4)  That, for purposes of determining any liability under the 
               Securities Act of 1933, each filing of an annual report 
               pursuant to Section 13(a) or 15(d) of the Securities Exchange 
               Act of 1934 that is incorporated by reference in the 
               Registration Statement shall be deemed to be a new
               registration statement relating to the securities offered
               therein, and the offering of such securities at that time
               shall be deemed to be the initial bona fide offering thereof. 

          Insofar as indemnification for liabilities arising under the 
Securities Act of 1933 may be permitted to directors, officers and controlling 
persons of Union Carbide pursuant to the provisions described under Item 15 
above, or otherwise, Union Carbide has been advised that in the opinion of the 
Securities and Exchange Commission such indemnification is against public 
policy as expressed in the Act and is, therefore, unenforceable.  In the event 
that a claim for indemnification against such liabilities (other than the 
payment by Union Carbide of expenses incurred or paid by a director, officer 
or controlling person of Union Carbide in the successful defense of any 
action, suit or proceeding) is asserted by such director, officer or 
controlling person in connection with the securities being registered, Union 
Carbide will, unless in the opinion of its counsel the matter has been settled 
by controlling precedent, submit to a court of appropriate jurisdiction the 
question of whether such indemnification by it is against public policy as 
expressed in the Act and will be governed by the final adjudication of such 
issue.

          For the purpose of determining any liability under the Securities 
Act of 1933, each post-effective amendment that contains a form of prospectus 
shall be deemed to be a new registration statement relating to the securities 
offered therein, and the offering of such securities at that time shall be 
deemed to be the initial bona fide offering thereof. 

                                    II-4




                               SIGNATURES

                Pursuant to the requirements of the Securities Act of 1933, 
Union Carbide Corporation certifies that it has reasonable grounds to believe 
that it meets all of the requirements for filing on Form S-3 and has duly 
caused this Registration Statement to be signed on its behalf by the 
undersigned, thereunto duly authorized, in Danbury, Connecticut, on 
April 28, 1999.

                                    UNION CARBIDE CORPORATION 


                                    By /s/John J. Wulff
                                       John K. Wulff 
                                       Vice-President, Chief Financial
                                       Officer and Controller

                                    II-5




                            POWER OF ATTORNEY


               Each person whose signature appears below appoints each of 
William H. Joyce, Bruce D. Fitzgerald or John K. Wulff his attorney-in-fact 
and agent, with full power of substitution and resubstitution, to sign and 
file with the Securities and Exchange Commission any amendments to the 
Registration Statement (including post-effective amendments), any related 
registration statements permitted pursuant to Rule 462(b) under the Securities 
Act of 1933, as amended, and any amendments to such registration statements 
(including post-effective amendments) and to file with the Securities and 
Exchange Commission one or more supplements to any prospectus included in any 
of the foregoing, and generally to do anything else necessary or proper in 
connection therewith.

               Pursuant to the requirements of the Securities Act of 1933, as 
amended, this Registration Statement has been signed by the following persons 
in the capacities and on the date indicated.


Signature                              Title                      Date



/s/William H. Joyce             Director, Chairman of           April 28, 1999
William H. Joyce                the Board, President and 
                                Chief Executive Officer






/s/John K. Wulff                Vice-President, Chief           April 28, 1999
John K. Wulff                   Financial Officer and 
                                Controller

                                    II-6




Signature                              Title                      Date



/s/C. Fred Fetterolf                Director                    April 28, 1999
C. Fred Fetterolf                 




/s/Rainer E. Gut                    Director                    April 28, 1999
Rainer E. Gut             




                                    Director                                   
Vernon E. Jordan, Jr.




/s/Robert D. Kennedy                Director                    April 28, 1999
Robert D. Kennedy




/s/Ronald L. Kuehn                  Director                    April 28, 1999
Ronald L. Kuehn, Jr.




/s/Rozanne L. Ridgway               Director                    April 28, 1999
Rozanne L. Ridgway




/s/James M. Ringler                 Director                    April 28, 1999
James M. Ringler




/s/Paul J. Wilhelm                  Director                    April 28, 1999
Paul J, Wilhelm

                                    II-7









_____________________________________________________________________________

                           Registration No. ______________

_____________________________________________________________________________





                      SECURITIES AND EXCHANGE COMMISSION
                           Washington, D. C. 20549

                           _______________________


                                  EXHIBITS

                                 FILED WITH

                                  FORM S-3

                            REGISTRATION STATEMENT

                                    UNDER

                          The Securities Act of 1933


                            ______________________


                           UNION CARBIDE CORPORATION

             (Exact name of registrant as specified in its charter)


_____________________________________________________________________________















                           INDEX TO EXHIBITS


Exhibit                                                         Sequential 
Number                                                          Page Number


5         Opinion of Phyllis Savage, Assistant General Counsel
          and Chief Finance and Securities Counsel of Union
          Carbide Corporation

12        Statement re: Computation of Ratio of
          Earnings to Fixed Charges of Union Carbide
          Corporation-Five Years ended December 31, 1998

23        Consent of KPMG LLP, independent auditors 

25.1      Statement of Eligibility under the Trust                   
          Indenture Act of 1939 (Form T-1) of The Chase 
          Manhattan Bank, Trustee.                                  

25.2      Statement of Eligibility under the Trust                   
          Indenture Act of 1939 (Form T-1) of the Bank of
          New York, Trustee.