**Exhibit 21**

 

SUBSIDIARIES OF CHEMTURA CORPORATION as ofDecember 31, 2009

 
| ** **                                      | ** ** | **Owned Directly  or********Indirectly by  Chemtura  Corporation** | ** ** | **State or********Country of********Organization** | ** ** |
|-------------------------------------------------|------------|--------------------------------------------------------------------|------------|----------------------------------------------------|------------|
| ** **                                      | ** ** | ** **                                                         | ** ** | ** **                                         | ** ** |
| 9056-0921  Quebec Inc.                          |       | 100.0                                                              |       | Canada                                             |       |
| A & M Cleaning Products, LLC           |       | 100.0                                                              |       | Delaware                                           |       |
| Anderol B.V.                                    |       | 100.0                                                              |       | The Netherlands                                    |       |
| Anderol Italia S.r.l.                           |       | 51.0                                                               |       | Italy                                              |       |
| Antimony Products (Proprietary) Ltd.            |       | 75.0                                                               |       | South Africa                                       |       |
| Aqua Clear Industries, LLC                      |       | 100.0                                                              |       | New York                                           |       |
| ASCK, Inc.                                 |       | 100.0                                                              |       | Delaware                                           |       |
| ASEPSIS Inc.                                    |       | 100.0                                                              |       | Canada                                             |       |
| Asepsis U.K. Limited                            |       | 100.0                                                              |       | United Kingdom                                     |       |
| ASEPSIS, Inc.                              |       | 100.0                                                              |       | Georgia                                            |       |
| ASIA  Stabilizers Co., Ltd.                     |       | 65.0                                                               |       | Korea                                              |       |
| Assured  Insurance Company                      |       | 100.0                                                              |       | Vermont                                            |       |
| Baxenden  Chemicals Limited                     |       | 100.0                                                              |       | United Kingdom                                     |       |
| Baxenden  Scandinavia A.S.                      |       | 100.0                                                              |       | Denmark                                            |       |
| BAYROL Deutschland GmbH                         |       | 100.0                                                              |       | Germany                                            |       |
| BAYROL France S.A.S.                            |       | 100.0                                                              |       | France                                             |       |
| BAYROL Iberica S.A.                             |       | 100.0                                                              |       | Spain                                              |       |
| BAYROL Scandinavia A/S                          |       | 100.0                                                              |       | Denmark                                            |       |
| BioLab Australia Pty. Ltd.                      |       | 100.0                                                              |       | Australia                                          |       |
| BioLab Company Store, LLC                       |       | 100.0                                                              |       | Delaware                                           |       |
| BioLab Franchise Company, LLC                   |       | 100.0                                                              |       | Delaware                                           |       |
| BioLab Textile Additives, LLC                   |       | 100.0                                                              |       | Delaware                                           |       |
| BioLab U.K.  Limited                            |       | 100.0                                                              |       | United Kingdom                                     |       |
| Bio-Lab Canada  Inc.                            |       | 100.0                                                              |       | Canada                                             |       |
| Bio-Lab, Inc.                              |       | 100.0                                                              |       | Delaware                                           |       |
| BLSA Industries (Proprietary) Limited           |       | 100.0                                                              |       | South Africa                                       |       |
| Certis Europe  B.V.                             |       | 15.0                                                               |       | The Netherlands                                    |       |
| Chemol  Reszvenytarsasag International          |       | 78.3                                                               |       | Hungary                                            |       |
| Chemtura (HK)  Holding Co. Limited              |       | 100.0                                                              |       | China-Hong Kong                                    |       |
| Chemtura (PTY)  Limited                         |       | 100.0                                                              |       | South Africa                                       |       |
| Chemtura  (Thailand) Limited                    |       | 100.0                                                              |       | Thailand                                           |       |
| Chemtura  Australia Pty. Ltd.                   |       | 100.0                                                              |       | Australia                                          |       |
| Chemtura  Belgium N.V.                          |       | 100.0                                                              |       | Belgium                                            |       |
| Chemtura Canada  Co./Cie                        |       | 100.0                                                              |       | Canada                                             |       |
| Chemtura  Chemicals (Nanjing) Company Limited   |       | 100.0                                                              |       | China-PRC                                          |       |
| Chemtura Chemicals India Private Limited        |       | 100.0                                                              |       | India                                              |       |
| Chemtura  Colombia Limitada                     |       | 100.0                                                              |       | Colombia                                           |       |
| Chemtura  Corporation U.K. Limited              |       | 100.0                                                              |       | United Kingdom                                     |       |
| Chemtura Corporation Mexico, S. de R.L. de C.V. |       | 100.0                                                              |       | Mexico                                             |       |
| Chemtura Europe d.o.o.                          |       | 100.0                                                              |       | Slovenia                                           |       |
| Chemtura Europe GmbH                            |       | 100.0                                                              |       | Switzerland                                        |       |
| Chemtura Europe  Limited                        |       | 100.0                                                              |       | United Kingdom                                     |       |
| Chemtura France  SAS                            |       | 100.0                                                              |       | France                                             |       |
| Chemtura  Holding Company, Inc.            |       | 100.0                                                              |       | Delaware                                           |       |
| Chemtura  Holdings GmbH                         |       | 100.0                                                              |       | Germany                                            |       |
| Chemtura Hong  Kong Limited                     |       | 100.0                                                              |       | China-Hong Kong                                    |       |
| Chemtura  Industria Quimica do Brasil Limitada  |       | 100.0                                                              |       | Brazil                                             |       |
| Chemtura Italy  S.r.l.                          |       | 100.0                                                              |       | Italy                                              |       |
| Chemtura Japan  Limited                         |       | 100.0                                                              |       | Japan                                              |       |

 

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| Chemtura Korea  Inc.                                      |   | 100.0 |   | Korea               |   |
|-----------------------------------------------------------|--------|-------|--------|---------------------|--------|
| Chemtura LLC                                              |   | 100.0 |   | Russia              |   |
| Chemtura  Management GmbH                                 |   | 100.0 |   | Germany             |   |
| Chemtura Manufacturing Germany GmbH                       |   | 100.0 |   | Germany             |   |
| Chemtura Manufacturing Italy S.r.I.                       |   | 100.0 |   | Italy               |   |
| Chemtura Manufacturing UK Limited                         |   | 100.0 |   | United Kingdom      |   |
| Chemtura  Netherlands B.V.                                |   | 100.0 |   | The Netherlands     |   |
| Chemtura New  Zealand Limited                             |   | 100.0 |   | New Zealand         |   |
| Chemtura  Organometallics GmbH                            |   | 100.0 |   | Germany             |   |
| Chemtura Receivables LLC                                  |   | 100.0 |   | Delaware            |   |
| Chemtura Quimica Argentina S.A.C.I.                       |   | 100.0 |   | Argentina           |   |
| Chemtura Sales France  SAS                                |   | 100.0 |   | France              |   |
| Chemtura Sales Germany GmbH                               |   | 100.0 |   | Germany             |   |
| Chemtura Sales Mexico,  S. de R.L. de C.V.                |   | 100.0 |   | Mexico              |   |
| Chemtura Sales UK Limited                                 |   | 100.0 |   | United Kingdom      |   |
| Chemtura  Shanghai Co., Ltd.                              |   | 100.0 |   | China-PRC           |   |
| Chemtura  Singapore Pte. Ltd.                             |   | 100.0 |   | Singapore           |   |
| Chemtura  Specialties Ecuador S.A.                        |   | 100.0 |   | Ecuador             |   |
| Chemtura Taiwan  Limited                                  |   | 100.0 |   | Taiwan              |   |
| Chemtura  Technology B.V.                                 |   | 100.0 |   | The Netherlands     |   |
| Chemtura  Technology Belgium N.V.                         |   | 100.0 |   | Belgium             |   |
| Chemtura UK Limited                                       |   | 100.0 |   | United Kingdom      |   |
| Chemtura Vermögensverwaltungs GmbH & Co. KG |   | 100.0 |   | Germany             |   |
| Chemtura  Verwaltungs GmbH                                |   | 50    | %      | Germany             |   |
| Chemtura Vinyl  Additives GmbH                            |   | 100.0 |   | Germany             |   |
| CNK Chemical  Realty Corporation                          |   | 100.0 |   | Pennsylvania        |   |
| CPC Bayrol  Limited                                       |   | 100.0 |   | United Kingdom      |   |
| Crompton &  Knowles of Canada Limited            |   | 100.0 |   | Canada              |   |
| Crompton  (Uniroyal Chemical) Registrations Limited       |   | 100.0 |   | United Kingdom      |   |
| Crompton  Chemicals B.V.                                  |   | 100.0 |   | The Netherlands     |   |
| Crompton Colors  Incorporated                             |   | 100.0 |   | Delaware            |   |
| Crompton  Corporation Ltda.                               |   | 100.0 |   | Chile               |   |
| Crompton Europe  Financial Services Company               |   | 100.0 |   | Delaware            |   |
| Crompton  European Holdings B.V.                          |   | 100.0 |   | The Netherlands     |   |
| Crompton  Financial Holdings                              |   | 100.0 |   | Ireland             |   |
| Crompton  Holding Corporation                             |   | 100.0 |   | Delaware            |   |
| Crompton  Holdings B.V.                                   |   | 100.0 |   | The Netherlands     |   |
| Crompton  Investments S.A.S.                              |   | 100.0 |   | France              |   |
| Crompton  Ireland Investment Company Limited              |   | 100.0 |   | Ireland             |   |
| Crompton  Kazakhstan LLP                                  |   | 100.0 |   | Kazakhstan          |   |
| Crompton LLC                                              |   | 100.0 |   | Delaware            |   |
| Crompton  Monochem, Inc.                             |   | 100.0 |   | Louisiana           |   |
| Crompton  Overseas B.V.                                   |   | 100.0 |   | The Netherlands     |   |
| Crompton S.A.                                             |   | 100.0 |   | Switzerland         |   |
| Crompton Services B.V.B.A.                                |   | 100.0 |   | Belgium             |   |
| Crompton Servicios S.A. de C.V.                           |   | 100.0 |   | Mexico              |   |
| Crompton  Specialties Asia Pacific Pte. Ltd.              |   | 100.0 |   | Singapore           |   |
| Crompton  Specialties GmbH                                |   | 100.0 |   | Germany             |   |
| Crompton  Specialties Limited                             |   | 92.0  |   | Thailand            |   |
| Crompton  Specialties Shanghai Company Limited            |   | 100.0 |   | China-PRC           |   |
| Crompton, Inc.                                       |   | 100.0 |   | Philippines         |   |
| DiaKhem  Technologies, LLC                                |   | 30.0  |   | Michigan            |   |
| EPA B.V.                                                  |   | 100.0 |   | The Netherlands     |   |
| Estech  GmbH & Co. KG                            |   | 49.0  |   | Germany             |   |
| Estech Managing  GmbH                                     |   | 49.0  |   | Germany             |   |
| GL Development,  Ltd.                                     |   | 100.0 |   | British West Indies |   |
| GLCC Laurel de Mexico,  S.A. de C.V.                      |   | 100.0 |   | Mexico              |   |
| GLCC Laurel,  LLC                                         |   | 100.0 |   | Delaware            |   |
| GLCC Mexico  Holdings, Inc.                          |   | 100.0 |   | Delaware            |   |
| Great Lakes Chemical (Far East) Limited                   |   | 100.0 |   | Hong Kong           |   |
| Great Lakes Chemical (Netherlands) B.V.                   |   | 100.0 |   | The Netherlands     |   |
| Great Lakes Chemical (S) Pte. Ltd                    |   | 100.0 |   | Singapore           |   |

 

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| Great Lakes Chemical Corporation                               |   | 100.0 |   | Delaware        |   |
|----------------------------------------------------------------|--------|-------|--------|-----------------|--------|
| Great Lakes Chemical Global, Inc.                         |   | 100.0 |   | Delaware        |   |
| Great Lakes Chemical Konstanz GmbH                             |   | 100.0 |   | Germany         |   |
| Great Lakes Europe Unlimited                                   |   | 100.0 |   | United Kingdom  |   |
| Great Lakes Holding (Europe) A.G.                              |   | 100.0 |   | Switzerland     |   |
| Great Lakes Holding Deutschland GmbH                           |   | 100.0 |   | Germany         |   |
| Great Lakes Holding S.A.S.                                     |   | 100.0 |   | France          |   |
| Great Lakes Trading Company, Inc.                         |   | 100.0 |   | Delaware        |   |
| Great Lakes Vermögensverwaltungs  GmbH & Co. KG  |   | 100.0 |   | Germany         |   |
| GT Seed  Treatment, Inc.                                  |   | 100.0 |   | Minnesota       |   |
| Gulf  Stabilizers Industries Sales FZCO                        |   | 52.0  |   | Dubai           |   |
| Gulf  Stabilizers Industries, Ltd.                             |   | 49.0  |   | Saudi Arabia    |   |
| Hatco Advanced  Technologies Corporation                       |   | 100.0 |   | Delaware        |   |
| Hattech GmbH                                                   |   | 100.0 |   | Germany         |   |
| HomeCare  Labs, Inc.                                      |   | 100.0 |   | Delaware        |   |
| Hydrotech  Chemical Corporation                                |   | 100.0 |   | Canada          |   |
| Hydrotech  Chemical Corporation Pty. Ltd.                      |   | 100.0 |   | Australia       |   |
| INTERBAYROL,  A.G.                                             |   | 100.0 |   | Switzerland     |   |
| ISCI, Inc.                                                |   | 100.0 |   | Indiana         |   |
| Isofoam Limited                                                |   | 100.0 |   | England         |   |
| Kem  Manufacturing Corporation                                 |   | 100.0 |   | Georgia         |   |
| Knight  Investments B.V.                                       |   | 100.0 |   | The Netherlands |   |
| Laurel  Industries Holdings, Inc.                         |   | 100.0 |   | Delaware        |   |
| Monochem, Inc.                                            |   | 100.0 |   | Louisiana       |   |
| MPC S.A.R.L.                                                   |   | 100.0 |   | France          |   |
| Nanjing Crompton  Shuguang Organosilicon Specialties Co., Ltd. |   | 85.0  |   | China-PRC       |   |
| Naugatuck  Treatment Company                                   |   | 100.0 |   | Connecticut     |   |
| Niagara  Insurance Company, Ltd.                               |   | 100.0 |   | Bermuda         |   |
| NPC  Services, Inc.                                       |   | 12.75 |   | Louisiana       |   |
| Penn Specialty Chemicals, inc.                                 |   | 29.8  |   | Delaware        |   |
| Poolbrite (SA) (Pty) Ltd                                       |   | 100.0 |   | South Africa    |   |
| POOLTIME GmbH                                                  |   | 100.0 |   | Germany         |   |
| PT Crompton  Indonesia                                         |   | 100.0 |   | Indonesia       |   |
| QO Chemicals  GmbH                                             |   | 100.0 |   | Germany         |   |
| QO  Chemicals, Inc.                                       |   | 100.0 |   | Delaware        |   |
| Recreational  Water Products Inc.                              |   | 100.0 |   | Canada          |   |
| Recreational  Water Products Pty. Ltd.                         |   | 100.0 |   | Australia       |   |
| Recreational  Water Products, Inc.                        |   | 100.0 |   | Delaware        |   |
| Rubicon LLC                                                    |   | 50.0  |   | Utah            |   |
| Sonneborn Crompton Sodium Joint Venture B.V.                   |   | 50.0  |   | The Netherlands |   |
| TETRABROM  Technologies Ltd.                                   |   | 50.0  |   | Israel          |   |
| Unimers India  Limited                                         |   | 1.62  |   | India           |   |
| Uniroyal  Chemical Company Limited                             |   | 100.0 |   | Bahamas         |   |
| Uniroyal  Chemical Company Limited (Delaware)                  |   | 100.0 |   | Delaware        |   |
| Uniroyal  Chemical S.A.                                        |   | 100.0 |   | Spain           |   |
| Uniroyal  Chemical S.A.R.L.                                    |   | 100.0 |   | Switzerland     |   |
| Uniroyal  Chemical Taiwan Limited                              |   | 80.0  |   | Taiwan          |   |
| Vestaron  Corporation                                          |   | 8.12  |   | Delaware        |   |
| Weber City Road  LLC                                           |   | 100.0 |   | Louisiana       |   |
| WRL of  Indiana, Inc.                                     |   | 100.0 |   | Indiana         |   |

 

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