**EXHIBIT21**

 

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

**U.S.SUBSIDIARIES**

 

12/31/2007

 

ü Chapter 11 Filing — April 2, 2001

 
| ** ** | ** ** | **SUBSIDIARY NAME**                            | ** ** | **CO.#**        | ** ** | **STATE OF**

**INCORPORATION** |
|------------|------------|------------------------------------------------|------------|-----------------|------------|---------------------------------|
|       |       |                                           |       |            |       |                            |
| ü     |       | A-1 Bit & Tool  Co., Inc.        |       | 458             |       | DE                              |
|       |       | * Advanced  Refining Technologies LLC     |       | 268 (f/k/a 930) |       | DE                              |
| ü     |       | Alewife Boston Ltd.                            |       | 070             |       | MA                              |
| ü     |       | Alewife Land  Corporation                      |       | 069             |       | MA                              |
|       |       | Alltech  Associates, Inc.                 |       | 259             |       | IL                              |
| ü     |       | Amicon, Inc.                              |       | 174             |       | DE                              |
|       |       | AP Chem Incorporated                           |       | 436             |       | MD                              |
| ü     |       | CB  Biomedical, Inc.                      |       | 125             |       | DE                              |
| ü     |       | CCHP, Inc.                                |       | 074             |       | DE                              |
| ü     |       | Coalgrace, Inc.                           |       | 824             |       | DE                              |
| ü     |       | Coalgrace II, Inc.                        |       | 835             |       | DE                              |
|       |       | Construction Products  Dubai, Inc.        |       | 121             |       | DE                              |
| ü     |       | Creative Food ‘N Fun  Company             |       | 587             |       | DE                              |
| ü     |       | Darex Puerto  Rico, Inc.                  |       | 798             |       | DE                              |
| ü     |       | Del Taco  Restaurants, Inc.               |       | 557             |       | DE                              |
| ü     |       | Dewey and Almy, LLC                            |       | 406             |       | DE                              |
| ü     |       | Ecarg, Inc.                               |       | 519             |       | NJ                              |
| ü     |       | Five Alewife Boston  Ltd.                      |       | 071             |       | MA                              |
| ü     |       | G C Limited Partners  I, Inc.             |       | 465             |       | DE                              |
| ü     |       | G C  Management, Inc.                     |       | 539             |       | DE                              |
| ü     |       | GEC Management  Corporation                    |       | 689             |       | DE                              |
| ü     |       | GN Holdings, Inc.                         |       | 073             |       | DE                              |
| ü     |       | GPC Thomasville Corp.                          |       | 637             |       | DE                              |
| ü     |       | Gloucester New  Communities Company, Inc. |       | 572             |       | NJ                              |
| ü     |       | Grace A-B Inc.                                 |       | 625             |       | DE                              |
| ü     |       | Grace A-B II Inc.                              |       | 827             |       | DE                              |
|       |       | Grace Asia  Pacific, Inc.                 |       | 107             |       | DE                              |
|       |       | Grace  Chemicals, Inc.                    |       | 710             |       | DE                              |
| ü     |       | Grace Chemical Company  of Cuba                |       | 305             |       | IL                              |
|       |       | Grace  Collections, Inc.                  |       | 316             |       | DE                              |
| ü     |       | Grace Culinary  Systems, Inc.             |       | 479             |       | MD                              |
| ü     |       | Grace Drilling Company                         |       | 877             |       | DE                              |

 

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 * Ownership of AdvancedRefining Technologies LLC is 55% W. R. Grace & Co.-Conn. (#001) and45% Chevron USA, Inc.; certain enumerated actions of the ExecutiveCommittee require unanimous consent.

 

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| ** ** | ** ** | **SUBSIDIARY NAME**                              | ** ** | **CO.#** | ** ** | **STATE OF**

**INCORPORATION** |
|------------|------------|--------------------------------------------------|------------|----------|------------|---------------------------------|
|       |       |                                             |       |     |       |                            |
| ü     |       | Grace Energy  Corporation                        |       | 681      |       | DE                              |
| ü     |       | Grace  Environmental, Inc.                  |       | 198      |       | DE                              |
| ü     |       | Grace Europe, Inc.                          |       | 407      |       | DE                              |
|       |       | Grace Germany Holdings, Inc.                |       |     |       | DE                              |
| ü     |       | Grace H-G Inc.                                   |       | 506      |       | DE                              |
| ü     |       | Grace H-G II Inc.                                |       | 828      |       | DE                              |
| ü     |       | Grace Hotel Services  Corporation                |       | 480      |       | DE                              |
| ü     |       | Grace International  Holdings, Inc.         |       | 543      |       | DE                              |
|       |       | Grace Latin  America, Inc.                  |       | 263      |       | DE                              |
|       |       | Grace Management  Services, Inc.            |       | 485      |       | DE                              |
| ü     |       | Grace Offshore Company                           |       | 822      |       | LA                              |
| ü     |       | Grace PAR Corporation                            |       | 621      |       | DE                              |
| ü     |       | Grace Petroleum Libya  Incorporated              |       | 880      |       | DE                              |
|       |       | Grace Receivables  Purchasing, Inc.              |       | 041      |       | DE                              |
| ü     |       | Grace Tarpon  Investors, Inc.               |       | 462      |       | DE                              |
| ü     |       | Grace Ventures Corp.                             |       | 664      |       | DE                              |
| ü     |       | Grace Washington, Inc.                      |       | 197      |       | DE                              |
| ü     |       | W. R. Grace Capital  Corporation                 |       | 563      |       | NY                              |
| ü     |       | W. R. Grace &  Co.-Conn.                |       | 001      |       | CT                              |
| ü     |       | W. R. Grace Land  Corporation                    |       | 523      |       | NY                              |
| ü     |       | Gracoal, Inc.                               |       | 856      |       | DE                              |
| ü     |       | Gracoal II, Inc.                            |       | 848      |       | DE                              |
| ü     |       | Guanica-Caribe Land  Development Corporation     |       | 376      |       | DE                              |
| ü     |       | Hanover Square  Corporation                      |       | 516      |       | DE                              |
| ü     |       | Homco  International, Inc.                  |       | 631      |       | DE                              |
|       |       | Ichiban Chemical  Co., Inc.                 |       | 028      |       | DE                              |
| ü     |       | Kootenai Development  Company                    |       | 079      |       | MT                              |
| ü     |       | L B Realty, Inc.                            |       | 495      |       | DE                              |
| ü     |       | Litigation  Management, Inc.                |       | 317      |       | DE                              |
| ü     |       | Monolith Enterprises,  Incorporated              |       | 477      |       | DC                              |
| ü     |       | Monroe  Street, Inc.                        |       | 481      |       | DE                              |
| ü     |       | MRA Holdings Corp.                               |       | 075      |       | DE                              |
| ü     |       | MRA  Intermedco, Inc.                       |       | 076      |       | DE                              |
| ü     |       | MRA Staffing  Systems, Inc.                 |       | 077      |       | DE                              |
|       |       | NZ Alltech, Inc.                            |       |     |       | IL                              |
| ü     |       | Remedium  Group, Inc.                       |       | 063      |       | DE                              |
| ü     |       | Southern Oil,  Resin & Fiberglass, Inc. |       | 318      |       | FL                              |
| ü     |       | Water Street  Corporation                        |       | 548      |       | DE                              |

 

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**NON-U.S.SUBSIDIARIES**

** **

** **
| **ARGENTINA**                             |
|-------------------------------------------|
| W. R. Grace  Argentina S.A.               |
| WRG Argentina,  S.A.                      |
| **AUSTRALIA**                             |
| Alltech  Associates (Australia) Pty. Ltd. |
| Grace Australia  Pty. Ltd.                |
| **BELGIUM**                               |
| Grace  Construction Products N.V.         |
| Grace N.V.                                |
| Grace Silica  N.V.                        |
| Inverco Benelux  N.V.                     |
| **BRAZIL**                                |
| Grace Brasil  Ltda.                       |
| Grace Davison  Ltda.                      |
| **CANADA**                                |
| GEC Divestment  Corporation Ltd.          |
| Grace Canada, Inc.                   |
| W. R. Grace  Finance (NRO) Ltd.           |
| **CHILE**                                 |
| Grace Quimica  Compania Limitada          |
| **CHINA -  PEOPLE’S REPUBLIC OF**    |
| Grace China Ltd.                          |
| Grace Trading  (Shanghai) Co., Ltd.       |
| **COLOMBIA**                              |
| Grace Colombia  S.A.                      |
| W. R. G.  Colombia S.A.              |
| **CUBA**                                  |
| Envases  Industriales y Comerciales, S.A. |
| Papelera  Camagueyana, S.A.               |
| **FRANCE**                                |
| Alltech France  S.A.R.L.                  |
| Grace Produits  de Construction SAS       |
| Société Civile  Beau-Béton |
| W. R. Grace S.A.                          |
| **GERMANY**                               |
| Advanced  Refining Technologies GmbH      |
| Alltech Grom  GmbH                        |
| Grace  Bauprodukte GmbH                   |
| Grace Darex GmbH                          |
| Grace Energy GmbH                         |
| Grace Europe Holding  GmbH                |
| Grace GP GmbH                             |
| Grace Management GP GmbH                  |
| Grace Silica  GmbH                        |

 

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| **GREECE**                                            |
|-------------------------------------------------------|
| Grace Hellas E.P.E.                                   |
| **HONG KONG**                                         |
| Alltech Applied Science Labs (HK) Limited             |
| Alltech Scientific (China) Limited                    |
| W. R. Grace (Hong Kong) Limited                       |
| W. R. Grace Southeast Asia Holdings Limited           |
| **HUNGARY**                                           |
| Grace Értékesito Kft.                       |
| **INDIA**                                             |
| Flexit Laboratories Private Ltd.                      |
| W. R. Grace & Co. (India) Private Limited    |
| **INDONESIA**                                         |
| PT. Grace  Specialty Chemicals Indonesia              |
| **IRELAND**                                           |
| Amicon Ireland  Limited                               |
| Grace  Construction Products (Ireland) Limited        |
| Trans-Meridian  Insurance (Dublin) Ltd.               |
| **ITALY**                                             |
| Alltech Italia  S.R.L.                                |
| W. R. Grace  Italiana S.p.A.                          |
| **JAPAN**                                             |
| Advanced  Refining Technologies K.K.                  |
| Grace Chemicals  K.K.                                 |
| Grace Japan  Kabushiki Kaisha                         |
| **KOREA**                                             |
| Grace Korea Inc.                                      |
| **MALAYSIA**                                          |
| W. R. Grace  (Malaysia) Sendiran Berhad               |
| W. R. Grace  Specialty Chemicals (Malaysia) Sdn. Bhd. |
| **MEXICO**                                            |
| Grace Container,  S. A. de C. V.                      |
| W. R. Grace  Holdings, S. A. de C. V.                 |
| **NETHERLANDS**                                       |
| Alltech Applied Science B.V.                          |
| Amicon B.V.                                           |
| Denac Nederland  B.V.                                 |
| LC Service B.V.                                       |
| Storm van Bentem  en Kluyver B.V.                     |
| W. R.  Grace B.V.                                     |
| **NETHERLANDS ANTILLES**                              |
| W. R.  Grace N.V.                                     |
| **NEW ZEALAND**                                       |
| Grace  (New Zealand) Limited                          |
| **PHILIPPINES**                                       |
| W. R. Grace  (Philippines), Inc.                 |
| **POLAND**                                            |
| Grace  Sp. z o.o.                                     |
| **RUSSIA**                                            |
| Darex  CIS LLC                                        |
| **SINGAPORE**                                         |
| W. R.  Grace (Singapore) Private Limited              |

 

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| **SOUTH AFRICA**                                      |
|-------------------------------------------------------|
| Grace Davison  (Proprietary) Limited                  |
| W. R. Grace Africa  (Proprietary) Limited             |
| **SPAIN**                                             |
| Grace, S.A.                                           |
| Pieri Especialidades,  S.L.                           |
| **SWEDEN**                                            |
| Grace AB                                              |
| Grace Catalyst AB                                     |
| Grace Sweden AB                                       |
| **SWITZERLAND**                                       |
| Pieri S.A.                                            |
| **TAIWAN**                                            |
| W. R. Grace Taiwan, Inc.                         |
| **THAILAND**                                          |
| W. R. Grace (Thailand)  Limited                       |
| **UNITED KINGDOM**                                    |
| A.A. Consultancy &  Cleaning Company Limited |
| Alltech  Associates Applied Science Limited           |
| Cormix  Limited                                       |
| Borndear  1 Limited                                   |
| Borndear  2 Limited                                   |
| Borndear  3 Limited                                   |
| Darex  UK Limited                                     |
| Emerson &  Cuming (Trading) Ltd.             |
| Emerson &  Cuming (UK) Ltd.                  |
| Exemere  Limited                                      |
| Grace  Construction Products Limited                  |
| Pieri  U.K. Limited                                   |
| Servicised  Ltd.                                      |
| W. R.  Grace Limited                                  |
| **VENEZUELA**                                         |
| Grace Venezuela, S.A.                                 |
| Inversiones GSC, S.A.                                 |
| **VIETNAM**                                           |
| W. R. Grace Vietnam  Company Limited                  |

 

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