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
Ciba Specialty 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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