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ISO 731-4:1977

Formic acid for industrial use — Methods of test — Part 4: Visual limit test for inorganic chlorides ISO 731-4:1977

Publication date:   Feb 1, 1977

95.99   Withdrawal of Standard   May 27, 2002

General information

95.99   Withdrawal of Standard   May 27, 2002

ISO

ISO/TC 47 Chemistry

International Standard

71.080.40   Organic acids

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Scope

Applicable to products having inorganic chlorides contents in the range 0,0005 to 0,5 % (m/m). Comparison of the turbidity, obtained by the addition of silver nitrate to a solution prepared from a test portion, with that similarly obtained from a standard chloride solution.

Life cycle

NOW

WITHDRAWN
ISO 731-4:1977
95.99 Withdrawal of Standard
May 27, 2002




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