International Standard
ISO 6842:1989
Surface active agents — Sulfated ethoxylated alcohols and alkylphenols — Determination of total active matter content
Reference number
ISO 6842:1989
Edition 2
1989-10
© ISO 2024
International Standard
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Published (Edition 2, 1989)
This standard was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 6842:1989

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Language
CHF 42
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Abstract

A test portion is boiled under reflux with ethanol in the presence of sodium sulphate. The solution is filtrated, the filtrate evaporated, and the residue weighed. Any sodium chloride present is determined by dissolution of the residue in aqueous acetone and titration with a standard volumetric silver nitrate solution. The mass of the residue is corrected for the sodium chloride content.

General information

  • Status
     : Published
    Publication date
     : 1989-10
    Stage
    : International Standard under systematic review [90.20]
  • Edition
     : 2
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 91
    ICS :
    71.100.40 
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