International Standard
ISO 4320:1977
Non-ionic surface active agents — Determination of cloud point index — Volumetric method
Reference number
ISO 4320:1977
Edition 1
1977-02
International Standard
Read sample
ISO 4320:1977
10191
Published (Edition 1, 1977)
This standard was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 4320:1977

ISO 4320:1977
10191
Language
Format
CHF 42
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Abstract

The determination is carried out by adding, at 30 degree Celsius, of distilled water to a propanol solution to the surface active agent until the appearance of cloudiness. The determination of the cloud point index provided a way of characterizing weakly alkoxylated derivates and their hydrocarbon hydrophobic groups. This simple and rapid measurement is a valuable means for checking the level of alkoxylation of non-ionic derivatives intended, for example, for sulphonation.

General information

  •  : Published
     : 1977-02
    : International Standard under systematic review [90.20]
  •  : 1
     : 3
  • ISO/TC 91
    71.100.40 
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