EXHIBIT 21 SUBSIDIARIES OF THE REGISTRANT The following is a list of Solutia's subsidiaries as of December 31, 2005, except for unnamed subsidiaries that, considered in the aggregate as a single subsidiary, would not constitute a significant subsidiary. Percentage of Voting Power Owned by Solutia ------------- AMCIS AG..........................................................100% CarboGen AG.......................................................100% CPFilms Inc.......................................................100% CPFilms Vertriebs GmbH............................................100% Monchem, Inc......................................................100% Monchem International, Inc. ......................................100% Solchem Netherlands C.V...........................................100% Solutia Brasil Ltda...............................................100% Solutia Canada Inc................................................100% Solutia Chemical Co., Ltd., Suzhou................................100% Solutia Chemicals Iberica S.L.....................................100% Solutia Chemicals India Private Limited...........................100% Solutia Europe S.A./N.V...........................................100% Solutia Greater China, Inc........................................100% Solutia International Trading (Shanghai) Co., Ltd.................100% Solutia Investments, LLC..........................................100% Solutia Italia SrL................................................100% Solutia Japan Limited.............................................100% Solutia Korea Ltd.................................................100% Solutia Management Company, Inc...................................100% Solutia Mexico S. de R.L. de C.V..................................100% Solutia Netherlands Holdings B.V..................................100% Solutia Services International SCA/Comm, VA.......................100% Solutia Singapore Pte. Ltd........................................100% Solutia Systems, Inc..............................................100% Solutia U.K. Holdings Limited.....................................100% Solutia U.K. Investments Limited..................................100% Solutia U.K. Limited..............................................100%