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ISO 2270:1989

Non-ionic surface active agents -- Polyethoxylated derivatives -- Iodometric determination of oxyethylene groups
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ISO 2270:1989

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

PUBLISH DATE 1989
ISO 2270:1989

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,
  • saturated fatty acids,
  • straight and branched chain alkylphenols.

It is not applicable in the presence of compounds containing sulfur or nitrogen, compounds containing oxypropylene group, aldehydes or acetals, sterols and derivatives.

SDO ISO: International Organization for Standardization
Document Number ISO 2270
Publication Date Aug. 15, 1989
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 91
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