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ISO 1390-3:1977

Maleic anhydride for industrial use — Methods of test — Part 3: Determination of free acidity — Potentiometric method ISO 1390-3:1977

Publication date:   Jun 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

71.080.50   Anhydrides

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Scope

The procedure is based on the potentiometric titration of the free acidity in a test portion with a standard volumetric triethylamine solution in anhydrous methyl ethyl ketone (butanone). - ISO 1390, Parts 1 to 6, replace ISO Recommendation R 1390-1970.

Life cycle

NOW

WITHDRAWN
ISO 1390-3:1977
95.99 Withdrawal of Standard
May 27, 2002




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