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SRPS ISO 684:1992

Analysis of soaps — Determination of total free alkali

Jun 10, 1992
Jun 10, 1992

General information

90.93     Aug 6, 2012

ISS

H091

International Standard

71.100.40  

Serbian  

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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

NOW

PUBLISHED
SRPS ISO 684:1992
90.93 Standard confirmed
Aug 6, 2012

Related project

Adopted from ISO 684:1974