Exhibit 21 Percentage of Voting State or Securities Sovereign Owned By Power of Immediate Name of Company Incorporation Parent Union Carbide Corporation (the "Corporation") New York - % Subsidiaries included in the Consolidated Financial Statements except where noted otherwise: Amerchol Corporation Delaware 100.00 Benefit Capital Management Corporation Delaware 100.00 Calidria Corporation Delaware 100.00 Catalysts, Adsorbents & Process Systems, Inc. Maryland 100.00 Dexter Realty Corporation Ohio 100.00 KTI Chemicals, Inc. Delaware 100.00 P.T. Union Carbide Indonesia Indonesia 100.00 Prentiss Glycol Company Delaware 100.00 Seadrift Pipeline Corporation Delaware 100.00 South Charleston Sewage Treatment Co. West Virginia 100.00 UCAR Emulsion Systems International, Inc. Delaware 100.00 UCAR Interm, Inc. Delaware 100.00 UCAR Louisiana Pipeline Company Delaware 100.00 UCAR Pipeline Inc. Delaware 100.00 UCAR, Polimeros y Quimicos C.A. Ecuador 100.00 UCAR Resinas Caribe Inc. Delaware 100.00 UCAR Vanor (Proprietary) Limited South Africa 100.00 UCEX (U.K.) Limited England 100.00 Umetco Minerals Corporation Delaware 100.00 Union Carbide Argentina S.A.I.C.S. Argentina 100.00 Union Carbide Asia Limited Hong Kong 100.00 Union Carbide Asia Pacific, Inc. Delaware 100.00 Union Carbide Benelux N.V. Belgium (1) Union Carbide do Brasil S/A Brazil 100.00 Union Carbide Caribe LLC Delaware 100.00 Union Carbide Canada Inc. Canada 100.00 Union Carbide Chemicals and Plastics Technology Corporation Delaware 100.00 Union Carbide Chemicals (Australia) Pty. Ltd. Australia 100.00 Union Carbide Chemicals Korea Limited Korea 100.00 Union Carbide Chemicals (Malaysia) Sdn. Bhd. Malaysia 100.00 Union Carbide Comercial, C.A. Venezuela 100.00 Union Carbide Customer Services Pte. Ltd. Singapore 100.00 Union Carbide Engineering and Hydrocarbons Service Company, Inc. Delaware 100.00 Union Carbide Ethylene Oxide/Glycol Company Delaware 100.00 Union Carbide (Europe) S.A. Switzerland 100.00 Union Carbide Foreign Sales Corporation US Virgin Is. 100.00 Union Carbide Formosa Co., Ltd. Taiwan 100.00 Union Carbide (Guangdong Zhongshan) Company Limited Peoples .Republic of China 75.00 <FN> (1) 99.83% of the voting securities of Union Carbide Benelux N.V. is owned by Union Carbide Corporation; and 00.17% by Union Carbide (Europe) S.A. </FN> Percentage of Voting State or Securities Sovereign Owned By Power of Immediate Name of Company Incorporation Parent Union Carbide Corporation. (Continued) Union Carbide Imaging Systems, Inc. Delaware 100.00 Union Carbide Inter-America Inc. Delaware 100.00 Union Carbide Inter-America Inc. New Jersey 100.00 Union Carbide Japan K.K. Japan 100.00 Union Carbide Limited England 100.00 Union Carbide Pan America, Inc. Delaware 100.00 Union Carbide Philippines (Far East) Inc. Philippines 100.00 Union Carbide Quimica Ltda. Brazil 100.00 Union Carbide Quimicos y Plasticos, S.A. de C.V. Mexico 100.00 Union Carbide South Africa (Proprietary) Limited South Africa 100.00 Union Carbide Subsidiary C, Inc. Delaware 100.00 Union Carbide Subsidiary L, Inc. Delaware 100.00 Union Carbide Subsidiary M, Inc. Delaware 100.00 Union Carbide Subsidiary Y, Inc. Delaware 100.00 Union Carbide Subsidiary Z, Inc. Delaware 100.00 Union Carbide Thailand Limited Thailand 100.00 Union Carbide Wire & Cable Company, Inc. Delaware 100.00 Union Polymers Sdn. Bhd. Malaysia 60.00 Westbridge Insurance Ltd. Bermuda 100.00 Companies reported in the Consolidated Financial Statements on an Equity in Net Assets Basis included: Asian Acetyls Rep. of Korea 33.00 Alberta & Orient Glycol Company Limited Canada 50.00 ASPELL Polymeres SNC France 50.00 Equate Petrochemical Company K.S.C. Kuwait 45.00 Nippon Unicar Company Limited Japan 50.00 Petromont and Company, Limited Partnership Canada 49.95 Petromont Inc. Canada 50.00 Polimeri Europa S.r.l. Italy 50.00 Seadrift Polypropylene Company Texas 50.00 Shawinigan Pipeline Reg'd. Canada 50.00 Union Carbide Lanka Limited Sri Lanka 49.00 UOP LLC New York 50.00 Univation Technology, LLC Delaware 50.00 Union Showa K.K. Japan 50.00 World Ethanol Company Illinois 50.00 The names of the Corporation's other consolidated subsidiaries and companies carried on an equity in net assets basis are not listed. These subsidiaries and companies, if considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. In addition, the Corporation has investments in other subsidiaries and 20-to-50%-owned companies for which financial statements are not submitted because all such subsidiaries and companies, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary.