Exhibit 21:
Subsidiaries of the Registrant
Hudson Technologies Company incorporated in the State of Delaware
Hudson Holdings, Inc. incorporated in the State of Nevada
Glacier International, Inc. incorporated in the State of New York
Glacier Trading Corp., incorporated in the State of New York
HFC International, Inc., incorporated in the State of New York
HFC Traders, Inc., incorporated in the State of New York
RGIT Trading Corp., incorporated in the State of New York
RCTI Corp., incorporated in the State of New York
RCTI Trading, Inc., incorporated in the State of New York
RGIT, Inc., incorporated in the State of New York
RGT Enterprises, Inc., incorporated in the State of New York
RCT International, Inc., incorporated in the State of New York
CCNY International, Inc. incorporated in the State of New York
CCNY Traders, Inc. incorporated in the State of New York
CCS Trading, Inc. incorporated in the State of New York
NYCCS Trading Corp. incorporated in the State of New York
RRC International, Inc. incorporated in the State of New York
RRC Technical Corp. incorporated in the State of New York
RRCA Corp. incorporated in the State of New York
RRCA Enterprises, Inc. incorporated in the State of New York
RRI Enterprises, Inc. incorporated in the State of New York
RRI Trading Corp. incorporated in the State of New York