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ISO/CD 4318

Surface active agents and soaps — Determination of water content — Azeotropic distillation method

General information

30.60     Apr 16, 2026

ISO

ISO/TC 91

International Standard

Scope

The water in a test portion is removed by azeotropic destillation with boiling xylene or petroleum. The volume of the water collected is measured. The method is applicable to products in the form of powders having water contents greater than 5 % (m/m), and in the form of pastes ans solutions. It is not applicable to samples containing water-soluble volatile compounds, for example ethanol.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 4318:1989

NOW

PROJECT
ISO/CD 4318
30.60 Close of voting/ comment period
Apr 16, 2026