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ISO 2270:1989

Non-ionic surface active agents — Polyethoxylated derivatives — Iodometric determination of oxyethylene groups

Aug 17, 1989

General information

90.93     Jun 21, 2021

ISO

ISO/TC 91

International Standard

71.100.40  

French   English  

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Scope

The sample is hydrolyzed by nascent hydroiodic acid. The iodine liberated is titrated with a standard volumetric sodium thiosulfate solution. The method is applicable to the analysis of polyethoxylated derivatives of primary saturated fatty alcohols, oleyl alcohol, satureted fatty acids, straight and branched chain alkylphenols. It is not applicable in the present of compounds containing sulfur or nitrogen, compounds containing oxypropylene group, aldehydes or acetals, sterols and derivatives.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 2270:1972

NOW

PUBLISHED
ISO 2270:1989
90.93 Standard confirmed
Jun 21, 2021