EXHIBIT 21 SUBSIDIARIES OF THE CORPORATION 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 Catalysts, Adsorbents & Process Systems, Inc. Maryland 100.00 Prentiss Glycol Company Delaware 100.00 Seadrift Pipeline Corporation Delaware 100.00 UCAR Emulsion Systems International, Inc. Delaware 100.00 UCAR, Polimeros y Quimicos C.A. Ecuador 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 (Guangdong Zhongshan) Company Limited People's Rep. of China 75.00 Union Carbide Asia Pacific, Inc. Delaware 100.00 Union Carbide Austria G.m.b.H. Austria 100.00 Union Carbide Benelux N.V. Belgium (1) Union Carbide do Brasil S/A Brazil 100.00 Union Carbide Caribe Inc. Delaware 100.00 Union Carbide Canada Inc. Canada 100.00 Union Carbide Chemicals (Australia) Pty. Ltd. Australia 100.00 Union Carbide Chemicals Korea Limited Korea 100.00 Union Carbide Comercial, C.A. Venezuela 100.00 Union Carbide Deutchland G.m.b.H. Germany 100.00 Union Carbide Engineering and Hydrocarbons Service Company, Inc. Delaware 100.00 Union Carbide Ethylene Oxide/Glycol Company Delaware 100.00 Union Carbide Eurofinance B.V. Netherlands 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 France S.A. France 100.00 P.T. Union Carbide Indonesia Indonesia 100.00 Union Carbide Inter-America Inc. Delaware 100.00 Union Carbide Inter-America Inc. New Jersey 100.00 Union Carbide Investimentos e Participacoes S/C Ltda. Brazil 100.00 Union Carbide Japan K.K. Japan 100.00 Union Carbide Limited England 100.00 Percentage of Voting State or Securities Sovereign Owned By Power of Immediate Name of Company Incorporation Parent Union Carbide Corporation. (Continued) Union Carbide Middle East Limited Delaware 100.00 Union Carbide Pan America, Inc. Delaware 100.00 Union Carbide Philippines (Far East) Inc. Philippines 100.00 Union Carbide Quimicos y Plasticos, S.A. de C.V. Mexico 100.00 Union Carbide Services Eastern Limited Hong Kong 100.00 Union Carbide Singapore Pte. Ltd. Singapore 100.00 Union Carbide South Africa (Proprietary) Limited South Africa 100.00 Union Carbide Thailand Limited Thailand 100.00 Union Carbide Turkey, Inc. Delaware 100.00 Union Polymers Sdn. Bhd. Malaysia 60.00 Companies reported in the Consolidated Financial Statements on an Equity in Net Assets Basis included: Union Carbide Corporation (Continued) Alberta & Orient Glycol Company Limited Canada 50.00 Aspen Polimeres France 50.00 Elektrode Maatskappy Van Suid Afrika (Eiendoms) Beperk South Africa 25.00 Nippon Unicar Company Limited Japan 50.00 UCAR Carbon Canada Inc. Canada 25.00 UCAR International Inc. Delaware 25.00 UCAR Carbon France S.A. France 25.00 UCAR Carbon Navarra S.L. Spain 25.00 UCAR Carbon S.A. Brazil (2) Union Showa K.K. Japan 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. (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. (2)12.535% of the voting securities of UCAR Carbon S.A. is owned by Union Carbide Corporation.