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ISO 2131:1972

Surface active agents — Simplified classification ISO 2131:1972

Publication date:   Nov 1, 1972

General information

90.60   Close of review   Sep 3, 2026

ISO

ISO/TC 91 Surface active agents

International Standard

71.100.40   Surface active agents

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Scope

The simplified system enables the characteristics of the substances to be expressed by an abbreviated lettering and numbering system, consisting of one letter and four figures (five in the case of compounds comprising several hydrphilic groups). The letter designates the ionic character and figures correspond to the functional groups present in the molecule.

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PUBLISHED
ISO 2131:1972
90.60 Close of review
Sep 3, 2026




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