ISO 1389-6:1977

Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydride content — Titrimetric method

Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydride content — Titrimetric method

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Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydride content — Titrimetric method

The principle consists in the dissolution of a test portion in an excess of standard volumetric sodium hydroxide solution and back-titration of the excess with a standard volumetric hydrochloric acid solution using phenolphthalein as indicator. – ISO 1389, Parts 1 to 11, replace ISO Recommendation R 1389-1970.

Edition1977
Standard Part No6
Published Date1977
Published ByInternational Standardization Organisation
Page Count2