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ISO 456:1973

Surface active agents — Analysis of soaps — Determination of free caustic alkali ISO 456:1973

Publication date:   Mar 1, 1973

General information

90.93 Standard confirmed   Jan 11, 2022

ISO

ISO/TC 91 Surface active agents

International Standard

71.100.40   Surface active agents

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Scope

The determination may be carried out in two different ways by the ethanol method or the barium chloride method. In the first case the soap is dissolved in neutralized ethanol, and the free caustic alkali is titrated with an ewthanol solution of hydrochloric acid. The second way includes precipitating of soap and carbonate with barium chloride and determining of the residual alkalinity of the solution, representing the alkalinity of the free potassium hydroxide.

Life cycle

NOW

PUBLISHED
ISO 456:1973
90.93 Standard confirmed
Jan 11, 2022