Exhibit 21
SUBSIDIARIES OF ARCH CHEMICALS, INC.1
(as of December 31, 1999)
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PERCENTAGE OF DIRECT/
INDIRECT OWNERSHIP BY
JURISDICTION ARCH OF VOTING SECURITIES
SUBSIDIARY WHERE ORGANIZED
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Arch Asia Holdings, Ltd. Republic of Mauritius 100%
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Arch Benefits Management, Inc. Delaware 100%
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Arch Chemicals B.V. The Netherlands 100%
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Arch Chemicals Canada, Inc. Canada 100%
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Arch Chemicals Far East, Limited Delaware 100%
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Arch Chemicals GmbH Germany 100%
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Arch Chemicals (Hong Kong) Limited Hong Kong 100%
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Arch Chemicals Japan, Inc. Japan 100%
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Arch Chemicals Limited United Kingdom 100%
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Arch Chemicals NV Belgium 100%
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Arch Chemicals S.A. France 100%
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Arch Chemicals S.R.L. Italy 100%
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Arch Chemicals Singapore Pte Ltd Singapore 100%
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Arch Chemicals Specialty Products, Inc. Delaware 100%
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Arch Chemicals (Suzhou) Co., Ltd. People's Republic of China 100%
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Arch Electronic Chemicals NV Belgium 100%
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Arch Electronic Chemicals, Inc. Pennsylvania 100%
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Arch Export Trading Corporation Barbados 100%
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Arch Kimya A.S. Turkey 98.85%
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Arch Overseas Finance N.V. Belgium 100%
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Arch Quimica Brasil Ltda. Brazil 100%
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Arch Semiconductor Chemicals GmbH Germany 100%
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Arch Semiconductor Chemicals Limited United Kingdom 100%
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Arch Semiconductor Chemicals S.A. France 100%
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Arch Specialty Chemicals, Inc. Delaware 100%
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Doe Run Gas Marketing Company Kentucky 100%
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Doe Run Gas Transmission Company Kentucky 100%
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Etoxyl, C.A.2 Venezuela 100%
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Hydrochim S.A. France 100%
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Hydromen Espana, S.L. Spain 100%
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Superior Pool Products, Inc. Delaware 100%
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1 There are omitted from the following list the names of certain subsidiaries
which, if considered in the aggregate as a single subsidiary, would not
constitute a significant subsidiary.
2 Name to be changed to Arch Quimica Andina.