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ISO 2268:1972

Surface active agents (non-ionic) — Determination of polyethylene glycols and non-ionic active matter (adducts) — Weibull method

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 method relies on the facts that both non-ionic adducts and polyethylene glycols are soluble in sodium chloride solution, but one is soluble in ethyl acetate whereas the other is not. Separation of the polyethylene glycols and the adducts is, therefore, possible by the following methods: Dissolution of the sample in ethyl acetate and extraction of polyethylene glycols by sodium chloride solution. Extraction of the polyethylene glycols isolated in the sodium chloride solution with chloroform, removal of the solvent and weighing of the residue. Evaporation of the ethyl acetate solution which contains the adducts and weighing of the residue.

Life cycle

NOW

PUBLISHED
ISO 2268:1972
90.20 Standard under periodical review
Apr 15, 2026

REVISED BY

ABANDON
ISO/CD 2268

National adoptions

SRPS ISO 2268:1996  
ISS

Surface active agents (non-ionic) — Determination of polyethylene glycols and non-ionic active matter (adducts) — Weibull method

90.20   Standard under periodical review

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