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SSH ISO 684:1974

Analysis of soaps — Determination of total free alkali

Sep 27, 2016

General information

60.60     Sep 27, 2016

DPS

DPS/KT 47

International Standard

71.100.40  

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Scope

The soap is dissolved in an ethanolic solution, the free alkali is neutralized with a known excess of sulphuric acid solution and the excess acid is titrated with ethanolic potassium hydroxide solution. The method is not applicable if the soap cantains additives (alkali, silicates, etw.) which can be decomposed by sulphuric acid by the procedure specified. The method is also not applicable to coloured soaps if the colour interferes with the phenolphthalein end point.

Life cycle

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PUBLISHED
SSH ISO 684:1974
60.60 Standard published
Sep 27, 2016

Related project

Adopted from ISO 684:1974