EXHIBIT 21.1

ISP CHEMCO INC.
LIST OF SUBSIDIARIES

JURISDICTION OF
COMPANY FORMATION
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Bluehall Incorporated Delaware
Verona Inc. Delaware
ISP Acquisition Corp. Delaware
ISP Alginates Inc. Delaware
ISP Environmental Services Inc. Delaware
ISP Management Company, Inc. Delaware
ISP Management LLC Delaware
ISP Administration Inc. Delaware
ISP Realty Corporation Delaware
ISP Minerals Inc. Delaware
ISP Minerals LLC Delaware
ISP Granules Inc. Delaware
ISP Mineral Products Inc. Delaware
ISP Real Estate Company, Inc. Delaware
ISP Technologies Inc. Delaware
International Specialty Products Funding Corporation Delaware
ISP Funding Corp. II Delaware
ISP Technologies LLC Delaware
ISP Tech (Texas) Inc. Delaware
ISP Chemicals Inc. Delaware
ISP Chemicals LLC Delaware
ISP Chemical Products Inc. Delaware
ISP Freetown Fine Chemicals Inc. Delaware
ISP Investments Inc. Delaware
ISP Investments LLC Delaware
ISP Capital Inc. Delaware
ISP Global Technologies Inc. Delaware
ISP Global Technologies LLC Delaware
ISP GT Inc. Delaware
ISP International Corp. Delaware
ISP (Puerto Rico) Inc. Delaware
ISP Andina, C.A. Venezuela
ISP Argentina S.A. Argentina
ISP Asia Pacific Pte Ltd. Singapore
ISP (Australasia) Pte Ltd. Australia
ISP (Belgium) N.V. Belgium
ISP (Belgium) International N.V. Belgium
ISP do Brasil Ltda. Brazil
ISP (Canada) Inc. Canada
ISP Global Operations (Barbados) Inc. Barbados
ISP Ceska Republika Spol, S.R.O. Czech. Rep.
ISP (China) Limited China
ISP Colombia Ltda. Colombia

JURISDICTION OF
COMPANY FORMATION
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ISP Freight Service N.V. Belgium
ISP HC Ltd. Cyprus
ISP Hungary Holdings Ltd. Hungary
ISP Finetech Ltd. Israel
ISP Global Technologies (Germany) Holding GmbH Germany
ISP Customer Service GmbH Germany
ISP Global Technologies Deutschland GmbH Germany
ISP Holdings (U.K.) Ltd. United Kingdom
ISP Alginates (U.K.) Ltd. United Kingdom
ISP (Great Britain) Co. Ltd. United Kingdom
ISP (Hong Kong) Limited Hong Kong
ISP (Japan) Ltd. Japan
ISP (Korea) Limited Korea
ISP Marl Holdings GmbH Germany
ISP Acetylene GmbH Germany
ISP Marl GmbH Germany
ISP Mexico, S.A. de C.V. Mexico
ISP (Norden) A.B. Sweden
ISP (Osterreich) Ges.m.b.h. Austria
ISP (Polska) Sp.z. o.p. Poland
ISP Sales (Barbados) Inc. Barbados
ISP Sales (U.K.) Limited Ireland
ISP (Singapore) Pte Ltd. Singapore
ISP (Switzerland) A.G. Switzerland
ISP (Thailand) Co., Ltd. Thailand
Chemfields Pharmaceuticals Private Limited(1) India

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(1) 50.1% owned by ISP Global Technologies Inc.