|                                          |
|------------------------------------------|
|                                          |  |
| SUBSIDIARY NAME                          | STATE OF INCORPORATION |
| AP Chem Incorporated                     | MD |
| Construction Products Dubai, Inc.        | DE |
| Darex Puerto Rico, Inc.                  | DE |
| De Neef Construction Chemicals (US) Inc. | TX |
| Dewey and Almy, LLC                      | DE |
| GCP International Inc.                   | DE |
| Grace Chemicals, Inc.                    | DE |
| Grace Europe, Inc.                       | DE |
| Hanover Square Corporation               | DE |
| Verifi LLC                               | DE |
| Water Street Corporation                 | DE |

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|                                                |
|------------------------------------------------|
|                                                |
| COUNTRY/SUBSIDIARY NAME                        |
| ARGENTINA                                      |
| W. R. Grace Argentina S.A.                     |
| AUSTRALIA                                      |
| Grace Australia Pty. Ltd.                      |
| BELGIUM                                        |
| De Neef Contruction Chemicals NV (Belgium)     |
| Grace Construction Products N.V.               |
| Grace N.V./S.A.                                |
| Inverco Benelux N.V.                           |
| BRAZIL                                         |
| Grace Brasil Ltda.                             |
| CANADA                                         |
| Grace Canada, Inc.                             |
| CHILE                                          |
| Grace Quimica Compania Limitada                |
| CHINA - PEOPLE’S REPUBLIC OF             |
| Grace China Ltd.                               |
| De Neef Construction Chemicals (China) Limited |
| COLOMBIA                                       |
| Grace Colombia S.A.                            |
| FRANCE                                         |
| Grace Produits de Construction SAS             |
| De Neef France Sarl                            |
| W. R. Grace S.A.                               |
| GERMANY                                        |
| De Neef Deutschland GmbH                       |
| Grace Bauprodukte GmbH                         |
| Grace Darex GmbH                               |
| GREECE                                         |
| Grace Hellas LLC                               |
| HONG KONG                                      |
| W. R. Grace (Hong Kong) Limited                |
| INDIA                                          |
| W. R. Grace & Co. (India) Private Limited  |
| INDONESIA                                      |
| PT. Grace Specialty Chemicals Indonesia        |
| IRELAND                                        |
| Grace Construction Products (Ireland) Limited  |

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|                                           |
|-------------------------------------------|
|                                           |
| ITALY                                     |
| W. R. Grace Italiana S.p.A.               |
| JAPAN                                     |
| Grace Chemicals Kabushiki Kaisha          |
| Grace Japan Kabushiki Kaisha              |
| KOREA                                     |
| Grace Korea Inc.                          |
| MALAYSIA                                  |
| W. R. Grace (Malaysia) Sendiran Berhad    |
| MEXICO                                    |
| Grace Container, S. A. de C. V.           |
| W. R. Grace Holdings, S. A. de C. V.      |
| NETHERLANDS, THE                          |
| W. R. Grace S.A. Netherland Branch        |
| NEW ZEALAND                               |
| Grace (New Zealand) Limited               |
| PANAMA                                    |
| W. R. Grace (Panama) S.A.                 |
| PERU                                      |
| GCP International Inc., Sucursal del Peru |
| PHILIPPINES                               |
| W. R. Grace (Philippines), Inc.           |
| POLAND                                    |
| Grace Sp. z o.o.                          |
| PORTUGAL                                  |
| De Neef Portugal                          |
| RUSSIAN FEDERATION                        |
| GCP Rus LLC                               |
| ZAO Grace Kriz                            |
| SINGAPORE                                 |
| De Neef Asia Pte. Ltd.                    |
| W. R. Grace (Singapore) Private Limited   |
| SOUTH AFRICA                              |
| W. R. Grace Africa (Proprietary) Limited  |
| SPAIN                                     |
| De Neef Technologies S. L.                |
| Grace, S.A.                               |
| SWEDEN                                    |
| De Neef Scandinavia AB (Sweden)           |
| Grace AB (Sweden)                         |
| Grace Sweden AB                           |
| SWITZERLAND                               |
| De Neef (CH) AG (Switzerland              |
| Grace Construction Products S.A.          |
| Union Financiere SA                       |

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|                                                                                             |
|---------------------------------------------------------------------------------------------|
|                                                                                             |
| TAIWAN                                                                                      |
| W. R. Grace Taiwan, Inc.                                                                    |
| THAILAND                                                                                    |
| W. R. Grace (Thailand) Limited                                                              |
| TURKEY                                                                                      |
| Grace Yapi Kimyasallari Sanayi ve Ticaret A.S.                                              |
| UNITED ARAB EMIRATES                                                                        |
| Cormix Middle East LLC and Emirates Chemicals LLC                                           |
| UNITED KINGDOM                                                                              |
| Darex UK Limited                                                                            |
| De Neef UK Ltd.                                                                             |
| GCP (UK) Holdings Limited                                                                   |
| Grace Construction Products Limited                                                         |
| W. R. Grace Limited                                                                         |
| VENEZUELA                                                                                   |
| Grace Venezuela, S.A.                                                                       |
| VIETNAM                                                                                     |
| W. R. Grace Vietnam Company Limited                                                         |
| W. R. Grace (Singapore) Private Limited, Resident Representative Office in Ho Chi Minh City |
| W. R. Grace (Vietnam) Co. Ltd. Branch in Hai Duong Province                                 |