EXHIBIT 21

W. R. GRACE & CO., a Delaware corporation

U.S. SUBSIDIARIES

SUBSIDIARY NAME	STATE OF INCORPORATION
Alltech Associates, Inc.	IL
Gloucester New Communities Company, Inc.	NJ
Grace Chemical Company of Cuba	IL
Grace Collections, Inc.	DE
Grace Energy Corporation	DE
Grace Management Services, Inc.	DE
Grace PAR Corporation	DE
Grace Technologies, Inc. (f/k/a Grace Asia Pacific, Inc.)	DE
Guanica-Caribe Land Development Corporation	DE
Kootenai Development Company	MT
W. R. Grace Capital Corporation	NY
W. R. Grace International LLC	DE
W. R. Grace & Co.-Conn.	CT
W. R. Grace Land Corporation	NY

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EXHIBIT 21

NON-U.S. SUBSIDIARIES

COUNTRY/

SUBSIDIARY NAME

ABU DHABI FREE ZONE

Grace Refining Technologies Middle East Trading Ltd.

AUSTRALIA

Alltech Associates (Australia) Pty. Ltd.

BRAZIL

W. R. Grace Brasil Indústria e Comércio de Produtos Quimicos Ltda.

CANADA

GEC Divestment Corporation Ltd.

W. R. Grace Canada Corp.

CHINA - PEOPLE’S REPUBLIC OF

Grace Trading (Shanghai) Co. Ltd.

Grace Catalysts (Qingdao) Company Limited

CUBA

Envases Industriales y Comerciales, S.A.

Papelera Camagueyana, S.A.

FRANCE

Alltech France S.A.R.L.

GERMANY

Alltech Grom GmbH

Grace Germany GmbH (fka Grace Energy GmbH)

Grace Europe Holding GmbH

Grace GmbH (fka Grace GmbH & Co. KG)

Grace GP GmbH

Grace Management GP GmbH

Grace Silica GmbH

Mertus 366.GmbH

HONG KONG

W. R. Grace Trading (Hong Kong) Limited

HUNGARY

Grace Értékesito Kft.

INDIA

Grace Davison Chemicals India Pvt. Ltd.

IRELAND

Grace European Finance (Dublin) Limited

ITALY

Alltech Italia S.R.L.

Grace Italy S.r.l.

JAPAN

W. R. Grace Japan K.K.

KOREA

W. R. Grace Korea Inc.

W. R. Grace Korea Limited

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EXHIBIT 21

COUNTRY/

SUBSIDIARY NAME

LUXEMBOURG

Grace Luxembourg S.à r.l.

MALAYSIA

W. R. Grace Specialty Chemicals (Malaysia) Sdn. Bhd.

MEXICO

Grace Holdings, S.A. de C.V.

NETHERLANDS

Alltech Applied Science B.V.

Denac Nederland B.V.

Grace Netherlands B.V.

OMAN

Grace Catalysts LLC

PHILIPPINES

Grace Global Operations Center (Philippines) Inc.

RUSSIA

Grace CIS LLC

SINGAPORE

Grace Products (Singapore) Private Limited

SOUTH AFRICA

Grace Products South Africa (Private) Limited

SPAIN

Grace Catalysts & Materials S.L.U.

SWEDEN

Grace Catalyst AB

THAILAND

W. R. Grace Trading (Thailand) Limited

TURKEY

Grace Turkey Kimyevi Madde Hizmetleri Anonim Sirketi (Grace Turkey Chemicals Services Inc.)

UNITED KINGDOM

Alltech Associates Applied Science Limited

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