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ISO 2268:1972

Surface active agents (non-ionic) — Determination of polyethylene glycols and non-ionic active matter (adducts) — Weibull method
1 nën 1972

General information

90.93     26 qer 2021

ISO

ISO/TC 91

International Standard

71.100.40  

frëngjisht   anglisht  

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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
90.93 Standard confirmed
26 qer 2021

REVISED BY

ABANDON
ISO/CD 2268

National adoptions

SSH ISO 2268:1972  
DPS

Agjentët me aktivitet sipërfaqësor (jo-jonikë) - Përcaktimi i polietilen glikolit dhe lëndës jo-jonike aktive (ndajfutëset) - Metoda Weibull

60.60 Standard published

DPS/KT 47 më tepër