Exhibit 21 SUBSIDIARIES OF THE REGISTRANT Name Organized Under Laws of - --------------------------------------------------- ----------------------- Conoco Asia Ltd. .................................. Bermuda Conoco Canada Limited ............................. Canada Conoco Developments Limited ....................... England Conoco Inc. ....................................... Delaware Conoco Indonesia Inc. ............................. Delaware Conoco International, Inc. ........................ Delaware Conoco Investments Norge A/S ...................... Norway Conoco Limited .................................... England Conoco Mineraloel GmbH ............................ Germany Conoco Norway Inc. ................................ Delaware Conoco Petroleum Limited .......................... England Conoco Petroleum Norge AS ......................... Norway Conoco Pipe Line Company .......................... Delaware Conoco Specialty Products Inc. .................... Delaware Conoco Timan-Pechora Ltd. ......................... Bermuda Conoco (U.K.) Limited ............................. England Consol Energy Inc. (50% owned) .................... Delaware Continental Oil Company of Libya .................. Delaware Danube Insurance Ltd. ............................. Bermuda Douglas Oil Company of California ................. California Dubai Petroleum Company ........................... Delaware DuPont Agrichemicals Caribe, Inc. ................. Delaware DuPont Argentina S.A. ............................. Argentina DuPont Asia Pacific, Ltd. ......................... Delaware DuPont (Australia) Limited ........................ Australia DuPont Canada Inc. (76.8% owned) .................. Canada DuPont Chemical and Energy Operations, Inc. ....... Delaware DuPont Coordination Center N.V. ................... Belgium DuPont Conoco Nordic A.B. ......................... Sweden DuPont Delaware, Inc. ............................. Delaware DuPont Diagnostics, Inc. .......................... Delaware DuPont de Colombia, S.A. .......................... Colombia DuPont de Nemours (Belgium) N.V. .................. Belgium DuPont de Nemours (Deutschland) GmbH .............. Germany DuPont de Nemours (Flandre), S.A. ................. France DuPont de Nemours (France) S.A. ................... France DuPont de Nemours International S.A. .............. Switzerland DuPont de Nemours Italiana S.p.A. ................. Italy DuPont de Nemours (Luxembourg) S.A. ............... Luxembourg DuPont de Nemours (Nederland) B.V. ................ The Netherlands DuPont do Brasil S.A. ............................. Brazil DuPont Dow Elastomers, L.L.C. (50% owned) ......... Delaware DuPont Electronic Materials, Inc. ................. Delaware DuPont Energy Company ............................. Delaware Name Organized Under Laws of - --------------------------------------------------- ----------------------- DuPont Engineering Products, S.A. ................. Luxembourg DuPont Feedstocks Company ......................... Delaware DuPont Foreign Sales Corporation .................. Virgin Islands DuPont Iberica, S.A. .............................. Spain DuPont Kabushiki Kaisha ........................... Delaware DuPont Korea, Ltd. ................................ Republic of Korea DuPont Merck Pharmaceutical Company (Delaware Partnership) (50% owned) ........................ Delaware DuPont Merck Pharma (Puerto Rico Partnership) (50% owned) ..................................... Puerto Rico DuPont (New Zealand) Ltd. ......................... New Zealand DuPont Photomasks, Inc. (69.5% owned) ............. Texas DuPont, S.A. de C.V. .............................. Mexico DuPont (Singapore) Pte. Ltd. ...................... Singapore DuPont (Singapore) Fibres Pte. Ltd. (90% owned) ... Singapore DuPont Taiwan Ltd. ................................ Taiwan DuPont (Thailand) Co. Ltd. ........................ Thailand DuPont Treasury Ltd. .............................. England DuPont (U.K.) Limited ............................. England Kayo Oil Company .................................. Delaware Norske Conoco A/S ................................. Norway Societe Europeene Des Carburants .................. Belgium World Wide Transport, Inc. ........................ Liberia Subsidiaries not listed would not, if considered in the aggregate as a single subsidiary, constitute a significant subsidiary. 2