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SRPS ISO 685:1992

Analysis of soaps — Determination of total alkali content and total fatty matter content

Jun 10, 1992
Jun 10, 1992
95.99   Withdrawal of Standard   Jul 31, 2020

General information

95.99     Jul 31, 2020

ISS

H091

International Standard

71.100.40  

Serbian  

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Scope

The method consists in decomposition of the soap by a known volume of standard volumetric mineral acid solution, extraction and separation of the liberated fatty matter with light petroleum and determination of a total alkali content by titration of the excess of acid contained in the aqueous phase with a standard volumetric sodium hydroxide solution. After evaporation of the light petroleum from the extract, dissolution of the residue in ethanol and neutralization of the fatty acids with a standard volumetric potassium hydroxide solution. Evaporation of the ethanol and weighing of the soap formed to determine the total fatty matter content.

Life cycle

NOW

WITHDRAWN
SRPS ISO 685:1992
95.99 Withdrawal of Standard
Jul 31, 2020

REVISED BY

PUBLISHED
SRPS ISO 685:2020

Related project

Adopted from ISO 685:1975