**Exhibit 21**

**SUBSIDIARIES OFCHEMTURA CORPORATION as of February 6, 2007**
|                                                | ** ** | **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 Canada Corporation                     |       | 100.0                                                           |       | Canada                                 |
| Anderol Inc.                                   |       | 100.0                                                           |       | New Jersey                             |
| Anderol Italia S.r.l.                          |       | 51.0                                                            |       | Italy                                  |
| Anderol Japan K.K.                             |       | 100.0                                                           |       | Japan                                  |
| 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, Inc.                                  |       | 100.0                                                           |       | Georgia                                |
| ASIA Stabilizers  Co., Ltd.                    |       | 65.0                                                            |       | Korea                                  |
| Assured  Insurance Company                     |       | 100.0                                                           |       | Vermont                                |
| Baxenden  Chemicals Limited                    |       | 53.5                                                            |       | England                                |
| Baxenden  Scandinavia A.S.                     |       | 53.5                                                            |       | 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                              |
| Bio-Lab Canada  Inc.                           |       | 100.0                                                           |       | Canada                                 |
| BioLab Textile Additives, LLC                  |       | 100.0                                                           |       | Delaware                               |
| BioLab U.K.  Limited                           |       | 100.0                                                           |       | United Kingdom                         |
| Bio-Lab, Inc.                                  |       | 100.0                                                           |       | Delaware                               |
| BLSA Industries (Pty) Ltd.                     |       | 100.0                                                           |       | South Africa                           |
| Blue Systemes S.A.S.                           |       | 100.0                                                           |       | France                                 |
| Certis Europe B.V.                             |       | 15.0                                                            |       | The Netherlands                        |
| Chemol France S.A.                             |       | 50.0                                                            |       | France                                 |
| Chemol  Reszvenytarsasag International         |       | 78.3                                                            |       | Hungary                                |
| Chemtura (HK)  Holding Co. Limited             |       | 100.0                                                           |       | China-Hong Kong                        |
| Chemtura (PTY)  LTD                            |       | 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      |       | 99.9                                                            |       | India                                  |
| Chemtura  Colombia Limitada                    |       | 100.0                                                           |       | Colombia                               |
| Chemtura  Corporation U.K. Limited             |       | 100.0                                                           |       | England                                |
| Chemtura  Corporation, S.A. de C.V.            |       | 100.0                                                           |       | Mexico                                 |
| Chemtura Europe GmbH                           |       | 100.0                                                           |       | Switzerland                            |
| Chemtura Europe  Limited                       |       | 100.0                                                           |       | Scotland                               |
| 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           |
|-------------------------------------------------------|--------|-------|--------|-----------------|
| 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 Sales Europe GmbH                            |   | 100.0 |   | Switzerland     |
| Chemtura Sales France SAS                             |   | 100.0 |   | France          |
| Chemtura Sales Germany GmbH                           |   | 100.0 |   | Germany         |
| Chemtura Sales Italy S.r.I.                           |   | 100.0 |   | Italy           |
| 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         |
| Chemtura-CNCCC  Danyang Chemical Co., Ltd.            |   | 90.0  |   | China-PRC       |
| CNK Chemical  Realty Corporation                      |   | 100.0 |   | Pennsylvania    |
| Crompton &  Knowles of Canada Limited             |   | 100.0 |   | Canada          |
| Crompton &  Knowles Receivables Corporation       |   | 100.0 |   | Delaware        |
| Crompton  (Uniroyal Chemical) Registrations Limited   |   | 100.0 |   | England         |
| Crompton  Agribusiness Pty. Ltd.                      |   | 100.0 |   | Australia       |
| Crompton  Chemicals B.V.                              |   | 100.0 |   | The Netherlands |
| Crompton Colors  Incorporated                         |   | 100.0 |   | Delaware        |
| Crompton  Corporation Ltda.                           |   | 100.0 |   | Chile           |
| Crompton Espana  S.L.                                 |   | 100.0 |   | Spain           |
| Crompton Europe  Financial Services Company           |   | 100.0 |   | Delaware        |
| Crompton  European Holdings B.V.                      |   | 100.0 |   | The Netherlands |
| Crompton  Financial Holdings                          |   | 100.0 |   | Ireland         |
| Crompton Grand  Banks Inc.                            |   | 100.0 |   | Canada          |
| 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 Limited                                      |   | 100.0 |   | Japan           |
| Crompton LLC                                          |   | 100.0 |   | Delaware        |
| Crompton  Monochem, Inc.                              |   | 100.0 |   | Louisiana       |
| Crompton  Overseas B.V.                               |   | 100.0 |   | The Netherlands |
| Crompton Quimica  S.A.C.I.                            |   | 100.0 |   | Argentina       |
| Crompton S.A.                                         |   | 100.0 |   | Switzerland     |
| Crompton S.A.S.                                       |   | 100.0 |   | France          |
| 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 Sdn. Bhd.                       |   | 100.0 |   | Malaysia        |
| Crompton  Specialties Shanghai Company Limited        |   | 100.0 |   | China-PRC       |
| Crompton, Inc.                                        |   | 100.0 |   | Philippines     |
| DiaKhem  Technologies, LLC                            |   | 10%   |   | Michigan        |
| Enenco,  Incorporated                                 |   | 100.0 |   | New York        |

 

----

 
| 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 |
| GLC Holdings GmbH                                              |   | 100.0 |   | Switzerland         |
| GLCC Laurel de Mexico, S.A. de C.V.                            |   | 100.0 |   | Mexico              |
| GLCC Laurel, LLC                                               |   | 50.0  |   | Delaware            |
| GLCC Mexico  Holdings, Inc.                                    |   | 100.0 |   | Delaware            |
| GLK Holdings (Netherlands) C.V.                                |   | 100.0 |   | The Netherlands     |
| Great Lakes Chemical (Far East) Limited                        |   | 100.0 |   | Hong Kong           |
| Great Lakes Chemical (Gulf) GmbH                               |   | 100.0 |   | Switzerland         |
| Great Lakes Chemical (Netherlands) B.V.                        |   | 100.0 |   | The Netherlands     |
| Great Lakes Chemical (S) Pte. Ltd                              |   | 100.0 |   | Singapore           |
| 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                                   |   | 100.0 |   | Delaware            |
| Hatco  Corporation                                             |   | 100.0 |   | New Jersey          |
| Hatco Innovatti  Holdings, Inc.                                |   | 100.0 |   | New Jersey          |
| Hattech GmbH                                                   |   | 100.0 |   | Germany             |
| Hatway, Inc.                                                   |   | 100.0 |   | New Jersey          |
| 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                                                |   | 53.5  |   | England             |
| Kaufman Holdings  Corporation                                  |   | 100.0 |   | Delaware            |
| Kem  Manufacturing Corporation                                 |   | 100.0 |   | Georgia             |
| Knight  Investments B.V.                                       |   | 100.0 |   | The Netherlands     |
| 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              |
| Unicorb Limited                                                |   | 100.0 |   | England             |
| 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      |
| Weber City Road  LLC              |   | 100.0 |   | Louisiana   |
| WRL of Indiana,  Inc.             |   | 100.0 |   | Indiana     |

 

----