**Exhibit 8.1**
**SUBSIDIARIES OF THE COMPANY**               **Group Holdings in %** **Principal Function of Company**         **Selling** **Manufacturing** **Research** **Service, Finance**         **AMERICAS**            **Argentina**            Ciba Especialidades Quimicas S.A., Buenos Aires  100  •      **Bermuda**            Chemical Insurance Company Ltd., Hamilton  100        •Ciba Specialty Chemicals Eurofinance Ltd., Hamilton  100        •Ciba Specialty Chemicals International Finance Ltd., Hamilton  100        •Ciba Specialty Chemicals Investment Ltd., Hamilton  100        •**Brazil**            Ciba Especialidades Quimicas Ltda., Sao Paulo  100  • •    **Canada**            Ciba Specialty Chemicals Canada Inc., Mississauga  100  •      Ciba Specialty Chemicals Water Treatments Corp., Mississauga  100  •      **Chile**            Ciba Especialidades Quimicas Ltd., Santiago de Chile  100  • •    Ciba Especialidades Quimicas Conosur S.A., Santiago de Chile  100  •      **Colombia**            Ciba Especialidades Quimicas S.A., Bogota  100  • •    **Guatemala**            Ciba Especialidades Quimicas, S.A. (ACC), Guatemala  100  • •    **Mexico**            Ciba Especialidades Quimicas Mexico S.A. de C.V., Mexico  100  • •    **Panama**            Ciba Especialidades Quimicas Colon S.A., Colon  100  •      **USA**            Ciba Specialty Chemicals Corporation, Tarrytown, NY  100  • • •   **ASIA-PACIFIC**            **Australia**            Ciba Specialty Chemicals Pty. Ltd., Thomastown  100  • •    **Bahrain**            CibaSpecialty Chemicals Middle East WLL  100  •      **China**            Ciba Specialty Chemicals (China) Ltd., Beijing  100        •Ciba Specialty Chemicals (Hong Kong) Ltd., Hong Kong  100  •      Ciba Specialty Chemicals (Shanghai) Ltd., Shanghai  100  •      Guangdong Ciba Specialty Chemicals Co. Ltd., Panyu, Guangdong  95  • •    Guangzhou Ciba Specialty Chemicals Co. Ltd., Guangzhou  80  • •    Qingdao Ciba Dyes Co. Ltd., Qingdao  94  • •    Qingdao Ciba Pigments Co. Ltd., Qingdao  91  • •    Shanghai Ciba Gao-Qiao Chemical Co. Ltd., Shanghai  75  • •    Shenzhen Ciba Specialty Chemicals Co. Ltd., Shenzhen  85  • •    Xiangtan Chemicals & Pigments Co. Ltd., Xiangtan  49  • •    **India**            Ciba India Private Ltd., Mumbai  100      • •Ciba Specialty Chemicals (India) Ltd., Mumbai  69  • •    Diamond Dye-Chem Limited, Mumbai  69  • •    
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               **Group Holdings in %** **Principal Function of Company**         **Selling** **Manufacturing** **Research** **Service, Finance**         **ASIA-PACIFIC (continued)**            **Indonesia**            P.T. Ciba Specialty Chemicals Indonesia, Jakarta  80  • •    **Japan**            Chemipro Fine Chemical Kaisha Ltd., Kobe  51  • •    Ciba Specialty Chemicals K.K., Osaka  100  •   •  Musashino-Geigy Co. Ltd., Tokyo  60  • •    Nippon Alkyl Phenol Co. Ltd., Tokyo  46  • •    **Republic of Korea (South Korea)**            Ciba Specialty Chemicals Korea Ltd., Seoul  100  •      Daihan Swiss Chemical Corp., Seoul  50  • • •  Doobon Fine Chemical Co., Ltd., Chongwon-kun  63  • •    **Malaysia**            Ciba Specialty Chemicals (Malaysia) SDN. BHD., Klang  70  • •    **New Zealand**            Ciba Specialty Chemicals N.Z. Ltd., Auckland  100  • •    **Singapore**            Ciba Specialty Chemicals (Singapore) Pte Ltd., Singapore  100  •      **South Africa**            Ciba Specialty Chemicals (Pty) Ltd., Spartan  100  •      **Taiwan**            Ciba Specialty Chemicals (Taiwan) Ltd., Kaohsiung  100  • •    **Thailand**            Ciba Specialty Chemicals (Thailand) Ltd., Bangkok  100  • •    Ciba Specialty Chemicals Industries Ltd., Bangkok  95  • •     **EUROPE**            **Austria**            Ciba Spezialitaetenchemie GmbH, Hard  100  •      **Belgium**            Ciba Specialty Chemicals N.V., Groot-Bijgaarden  100  •      **Finland**            Ciba Specialty Chemicals Finland OY, Helsinki  100  •      **France**            Ciba Specialites Chimiques SA, Saint Fons  100  • •    Ciba Specialty Chemicals Masterbatch SA, Saint Jeoire en Faucigny  100  • • •  **Germany**            Ciba Spezialitaetenchemie Grenzach GmbH, Grenzach-Wyhlen  100    • •  Ciba Spezialitaetenchemie Holding Deutschland GmbH, Lampertheim  100        •Ciba Spezialitaetenchemie Lampertheim GmbH, Lampertheim  100  • • •  Ciba Spezialitaetenchemie Pfersee GmbH, Langweid/Lech  100  • • •  **Greece**            Ciba Specialty Chemicals Hellas ABEE, Thessaloniki  100  •      **Hungary**            Ciba Specialty Chemicals Magyarorszag, Kft., Budapest  100  •      **Italy**            Ciba Specialty Chemicals S.p.A., Sasso Marconi (Bologna)  100  • • •  L.A.C. S.p.A., Vanzaghello, Milano  100  • •    Magenta Master Fibres, S.r.l., Milano  60  • • •  **Luxembourg**            Ciba Specialty Chemicals Finance Luxembourg S.A.  100        •
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               **Group Holdings in %** **Principal Function of Company**         **Selling** **Manufacturing** **Research** **Service, Finance**         **EUROPE (continued)**            **Netherlands**            Ciba Specialty Chemicals International Nederland B.V., Maastricht  100        •Ciba Specialty Chemicals (Maastricht) B.V., Maastricht  100  • • •  EFKA Additives B.V., Heerenveen  100  • • •  Ciba Specialty Chemicals Melapur B.V., Heerlen  100      •  **Portugal**            Ciba Especialidades Quimicas Lda., Porto  100  •      **Spain**            Ciba Especialidades Quimicas S.L., Barcelona  100  •      **Sweden**            Ciba Specialty Chemicals Sweden AB, Göteborg  100  •      **Switzerland**            Ciba Specialites Chimiques Monthey SA, Monthey  100    •    Ciba Spezialitaetenchemie AG, Basel  100  • • •  Ciba Spezialitaetenchemie Finanz AG, Basel  100        •Ciba Spezialitaetenchemie International AG, Basel  100        •Ciba Spezialitaetenchemie Kaisten AG, Kaisten  100    •    Ciba Spezialitaetenchemie Schweizerhalle AG, Muttenz  100    •    Ciba Spezialitaetenchemie Services AG, Basel  100        •CIMO Compagnie Industrielle de Monthey SA, Monthey  50        •**Turkey**            Ciba Oezel Kimyevi Uerueaenler Sanayi ve Ticaret Ltd., Istanbul  100  •      **United Kingdom**            Ciba Specialty Chemicals PLC, Macclesfield  100  • • •  Ciba Specialty Chemicals Investment PLC, Macclesfield  100        •Ciba Specialty Chemicals Water Treatments Ltd., Bradford  100  • • •  
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