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ISO 2131:1972

Surface active agents — Simplified classification

Nov 1, 1972

General information

90.20     Apr 15, 2026

ISO

ISO/TC 91

International Standard

71.100.40  

French   English  

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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.

Life cycle

NOW

PUBLISHED
ISO 2131:1972
90.20 Standard under periodical review
Apr 15, 2026

National adoptions

SRPS ISO 2131:1993  
ISS

Surface active agents — Simplified classification

90.20   Standard under periodical review

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