ISO-2270 › Non-ionic surface active agents -- Polyethoxylated derivatives -- Iodometric determination of oxyethylene groups

ISO-2270 - 2ND EDITION - CURRENT


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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.

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Document Number

ISO 2270:1989

Revision Level

2ND EDITION

Status

Current

Publication Date

Aug. 15, 1989

Committee Number

ISO TC 91