ISO 4320:1977 Preview

Non-ionic surface active agents -- Determination of cloud point index -- Volumetric method

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

  • Status :  Published
    Publication date : 1977-02
  • Edition : 1
    Number of pages : 3
  • :
    ISO/TC 91
    Surface active agents
  • 71.100.40
    Surface active agents

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