International Standard
ISO 2270:1989
Non-ionic surface active agents — Polyethoxylated derivatives — Iodometric determination of oxyethylene groups
Reference number
ISO 2270:1989
Edition 2
1989-08
© ISO 2024
International Standard
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Published (Edition 2, 1989)
This standard was last reviewed and confirmed in 2021. Therefore this version remains current.

ISO 2270:1989

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CHF 42
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Abstract

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.

General information

  • Status
     : Published
    Publication date
     : 1989-08
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 2
    Number of pages
     : 5
  • Technical Committee :
    ISO/TC 91
    ICS :
    71.100.40 
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