**Exhibit 21.1**

** **

**ROCKWOOD HOLDINGS, INC. SUBSIDIARIES**

** **
| Name of Subsidiary                                                                          | ** ** | ** **     | ** ** | **State/Jurisdiction of Incorporation** |
|---------------------------------------------------------------------------------------------|------------|----------------|------------|-----------------------------------------|
| Aachener Chemische Werke Gesellschaft für glastechnische Produckte und  Verfahren GmbH |       | Germany        |
| Advantis Technologies, Inc.                                                                 |       | Delaware       |
| Agena Resinas e Colas Ltda.                                                                 |       | Brazil         |
| Alberti & Co. GmbH                                                                      |       | Germany        |
| AlphaGary (Canada) Limited                                                                  |       | Canada         |
| AlphaGary Corporation                                                                       |       | Delaware       |
| AlphaGary Limited                                                                           |       | United Kingdom |
| AM Craig Ltd.                                                                               |       | United Kingdom |
| Ardrox—Agena Quimica Ltda.                                                             |       | Brazil         |
| Ardrox Ltd.                                                                                 |       | United Kingdom |
| BAE Vermögensverwaltungs GmbH                                                          |       | Germany        |
| BCI Pensions Trustees Ltd.                                                                  |       | United Kingdom |
| Bedec Tir S.A.                                                                              |       | France         |
| Bonder Iran S.S.K. (a)                                                                      |       | Iran           |
| Brent Europe Ltd.                                                                           |       | United Kingdom |
| Brent International B.V.                                                                    |       | United Kingdom |
| Brockhues GmbH & Co. KG                                                                 |       | Germany        |
| Caledonian Applied Technology Limited                                                       |       | United Kingdom |
| CeramTec Innovative  Ceramic Engineering (M) Sdn. Bhd.                                      |       | Malaysia       |
| CeramTec AG Innovative Ceramic Engineering                                                  |       | Germany        |
| CeramTec Anlagen und Betriebs GmbH                                                          |       | Germany        |
| CeramTec Czech Republic s.r.o.                                                              |       | Czech Republic |
| CeramTec Ibérica—Innovative Ceramic Engineering S.L.                              |       | Spain          |
| CeramTec Italia S.r.l.                                                                      |       | Italy          |
| CeramTec Korea Ltd.                                                                         |       | Korea          |
| CeramTec North America Innovative Ceramic Engineering Corporation                           |       | Delaware       |
| CeramTec UK Ltd.                                                                            |       | United Kingdom |
| Cerasiv GmbH Innovatives Keramik-Engineering                                                |       | Germany        |
| Cetema B.V.                                                                                 |       | Netherlands    |
| Changchun Chemicals Co., Ltd.                                                               |       | China          |
| Changshu Rockwood Pigments Company Limited                                                  |       | China          |
| Chemetall (Australasia) Pty. Ltd.                                                           |       | Australia      |
| Chemetall (Proprietary) LTD.                                                                |       | South Africa   |
| Chemetall (Thailand) Co. Ltd.                                                               |       | Thailand       |
| Chemetall Danmark A/S                                                                       |       | Denmark        |
| Chemetall AG                                                                                |       | Switzerland    |
| Chemetall Asia Pte. Ltd.                                                                    |       | Singapore      |
| Chemetall Chemical Products Inc.                                                            |       | Delaware       |
| Chemetall Corp.                                                                             |       | Delaware       |
| Chemetall do Brasil Ltda.                                                                   |       | Brazil         |
| Chemetall Finland  Oy                                                                       |       | Finland        |

 

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| Chemetall Foote Corp.                                                           |   | Delaware       |
|---------------------------------------------------------------------------------|--------|----------------|
| Chemetall Ges.m.b.H.                                                            |   | Austria        |
| Chemetall GmbH                                                                  |   | Germany        |
| Chemetall Holding  GmbH                                                         |   | Austria        |
| Chemetall Hong  Kong Ltd.                                                       |   | China          |
| Chemetall  Hungária Vegyianyagokat Gyártó es Forgalmazó Kft |   | Hungary        |
| Chemetall India  Company Ltd.                                                   |   | United Kingdom |
| Chemetall Italia  S.r.l.                                                        |   | Italy          |
| Chemetall Japan  K.K.                                                           |   | Japan          |
| Chemetall  Mexicana, S.A. de C.V.                                               |   | Mexico         |
| Chemetall N.V.                                                                  |   | Belgium        |
| Chemetall  Philippines Co. Ltd., Inc.                                           |   | Philippines    |
| Chemetall PLC                                                                   |   | United Kingdom |
| Chemetall Polska  Sp. zo.o.                                                     |   | Poland         |
| Chemetall Sdad.  Anma.                                                          |   | Spain          |
| Chemetall S.r.l.                                                                |   | Italy          |
| Chemetall s.r.o.                                                                |   | Czechia        |
| Chemetall Sanayi  Kimyasallari Ticaret ve Sanayi A.S.                           |   | Turkey         |
| Chemetall S.A.S.                                                                |   | France         |
| Chemetall Skandinavien  Ytteknik AB                                             |   | Sweden         |
| Chemetall  Speciality Chemicals Ltd.                                            |   | United Kingdom |
| Chemetall Surface  Treatment Holding Co., Ltd.                                  |   | Thailand       |
| Chemetall Taiwan  Co., Ltd.                                                     |   | Taiwan         |
| Chemetall TL  S.r.l.                                                            |   | Italy          |
| Chemetall-Rai  India Ltd.                                                       |   | India          |
| Chemical Specialties,  Inc.                                                     |   | North Carolina |
| Chemserve Ltd.                                                                  |   | United Kingdom |
| ChemStore GmbH                                                                  |   | Germany        |
| Chillihurst  Limited                                                            |   | United Kingdom |
| Chongqing  Chemetall Chemicals Co., Ltd.                                        |   | China          |
| CM Services B.V.                                                                |   | Netherlands    |
| CM-Hilfe GmbH  Unterstützungskasse                                         |   | Germany        |
| Compugraphics  International Limited                                            |   | United Kingdom |
| Compugraphics  U.S.A. Inc.                                                      |   | Delaware       |
| Creambay Limited                                                                |   | United Kingdom |
| Creamglade  Limited                                                             |   | United Kingdom |
| CSI Kemwood AB                                                                  |   | Sweden         |
| CSI Kemwood Oy                                                                  |   | Finland        |
| CSI Wood  Protection Limited                                                    |   | United Kingdom |
| Cyantek Corporation                                                             |   | Delaware       |
| Deutsche Baryt-Industrie Dr.  Rudolf Alberti GmbH & Co. KG                  |   | Germany        |
| DICON Explosives  Company Ltd.                                                  |   | Nigeria        |
| DNJV  Vermögensverwallung GmbH                                             |   | Germany        |
| Dynamit Nobel  GmbH                                                             |   | Germany        |
| Dynamit Nobel  Unterstützungsfonds GmbH                                    |   | Germany        |
| EKOKEMI GmbH                                                                    |   | Germany        |
| Electrochemicals  Inc.                                                          |   | Delaware       |

 

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| Exsil, Inc.                                                  |   | Delaware       |
|--------------------------------------------------------------|--------|----------------|
| Foote Chile  Holding Company                                 |   | Delaware       |
| Foote Minera e Inversiones  Ltda.                            |   | Chile          |
| Fuyang Golden  Autumn Chemicals Company Limited              |   | China          |
| Guangzhou Huali  Sachtleben Chemicals Company Ltd.           |   | China          |
| hebro chemie Anlagen-und  Betriebs-GmbH                      |   | Germany        |
| hebro chemie GmbH                                            |   | Germany        |
| Industrieservice  Ges.m.b.H.                                 |   | Austria        |
| Inorganic  Pigments Limited                                  |   | United Kingdom |
| iSiltec Innovative Silicon  Technologies GmbH                |   | Germany        |
| isiltec Wafer  Reclaim GmbH                                  |   | Germany        |
| Isiltec, Inc.                                                |   | Georgia        |
| KENDELL s.r.l.                                               |   | Italy          |
| Knight Chimique de Specialite  S.A.S.                        |   | France         |
| Knight Lux 1  S.á.r.l.                                  |   | Luxembourg     |
| Knight Lux 2  S.á.r.l.                                  |   | Luxembourg     |
| LRG Recycling  GmbH Leverkusen                               |   | Germany        |
| Lurex, Inc                                                   |   | Delaware       |
| Metalon Stolberg Gesellschaft  mit beschränkter Haftung |   | Germany        |
| MIWAC  Mitteldeutsche Wasserchemie GmbH                      |   | Germany        |
| Mustardgrange  Limited                                       |   | United Kingdom |
| Nigerian  Development and Construction Company Ltd.          |   | Nigeria        |
| Oakite Canada  Ltd.                                          |   | Canada         |
| Oakite Products, Inc.                                        |   | Delaware       |
| Petri-DN GmbH  Inflator Systems                              |   | Germany        |
| Pigment Chemie Gesellschaft mit  beschränkter Haftung   |   | Germany        |
| Princeton Silver  Limited                                    |   | United Kingdom |
| ProCeram spol.  S.r.o.                                       |   | Czech Republic |
| Process Ink  Holdings Ltd.                                   |   | United Kingdom |
| Process Inks And  Coatings Ltd.                              |   | United Kingdom |
| Rockwood (Ningbo)  Chemicals Corporation Limited             |   | China          |
| Rockwood  Absorbents (Baulking) Limited                      |   | United Kingdom |
| Rockwood  Additives Limited                                  |   | United Kingdom |
| Rockwood America  Inc.                                       |   | Delaware       |
| Rockwood Clay  Additives GmbH                                |   | Germany        |
| Rockwood  Electrochemicals (Suzhou) Co., Ltd.                |   | China          |
| Rockwood  Electrochemicals Asia Limited                      |   | Taiwan         |
| Rockwood  Electronic Materials Limited                       |   | United Kingdom |
| Rockwood  Electronics France SA                              |   | France         |
| Rockwood  Industries Spain S.L.                              |   | Spain          |
| Rockwood Italia  S.p.A.                                      |   | Italy          |
| Rockwood Pigmente  Holding GmbH                              |   | Germany        |
| Rockwood Pigments  (UK) Limited                              |   | United Kingdom |
| Rockwood Pigments  and Trading Pty Ltd.                      |   | Australia      |
| Rockwood Pigments  NA, Inc.                                  |   | Delaware       |
| Rockwood  Specialties (Singapore) Pte Limited                |   | Singapore      |

 

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| Rockwood Specialties Australia Pty  Ltd.                      |   | Australia      |
|---------------------------------------------------------------|--------|----------------|
| Rockwood  Specialties Consolidated, Inc.                      |   | Delaware       |
| Rockwood  Specialties GmbH                                    |   | Delaware       |
| Rockwood  Specialties Group CeramTec GmbH                     |   | Germany        |
| Rockwood  Specialties Group Chemetall GmbH                    |   | Germany        |
| Rockwood  Specialties Group GmbH                              |   | Germany        |
| Rockwood  Specialties Group Hebro GmbH                        |   | Germany        |
| Rockwood  Specialties Group Sachtleben GmbH                   |   | Germany        |
| Rockwood  Specialties Group, Inc.                             |   | Delaware       |
| Rockwood  Specialties Inc.                                    |   | Delaware       |
| Rockwood Specialties  International, Inc.                     |   | Delaware       |
| Rockwood  Specialties Limited                                 |   | United Kingdom |
| Rockwood  Vermögensverwaltung GmbH                       |   | Germany        |
| Sachtleben Chemie Anlagen-und  Betriebs-GmbH                  |   | Germany        |
| Sachtleben Chemie  GmbH                                       |   | Germany        |
| Sachtleben  Commercial and Trading (Shanghai) Company Limited |   | China          |
| Sachtleben  Corporation                                       |   | Delaware       |
| Sales de Magnesio Ltda.                                       |   | Chile          |
| Shanghai CeramTec  Co., Ltd. (a)                              |   | China          |
| Shanghai  Chemetall Chemicals Co., Ltd.                       |   | China          |
| Silo Pigmente  GmbH                                           |   | Germany        |
| Sociedad Chilena  de Litio Ltda.                              |   | Chile          |
| Southern Clay  Products, Inc.                                 |   | Texas          |
| Southern Color  N.A., Inc.                                    |   | Delaware       |
| SureChem  Industries Pty Ltd.                                 |   | Australia      |
| Suzhou CeramTec  High-Tec Ceramics Co., Ltd.                  |   | China          |
| The Brent  Manufacturing Company Ltd.                         |   | United Kingdom |
| Viance Limited                                                |   | United Kingdom |
| Viance LLC                                                    |   | Delaware       |
| Viance Oy                                                     |   | Finland        |
| Winnets Inks Ltd.                                             |   | United Kingdom |
| Würgendorf  Genehmigungshaltergesellschaft mbH           |   | Germany        |

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(a) In theprocess of dissolution

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