ISO 1389-6:1977
Phthalic anhydride for industrial use — Methods of test — Part 6: Determination of phthalic anhydride content — Titrimetric method
Reference number
ISO 1389-6:1977
ISO 1389-6:1977
Edición 1
1977-02
1977-02
© ISO 2024
Retirada
Resumen
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.
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