ISO-4320 › Non-ionic surface active agents -- Determination of cloud point index -- Volumetric method
ISO-4320
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1ST EDITION
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CURRENT
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1ST EDITION - Feb. 1, 1977
1ST EDITION ERRATUM - June 1, 1980
1ST EDITION ERRATUM - June 1, 1980
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.
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71.100.40 (Surface active agents)
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Document Number
ISO 4320:1977
Revision Level
1ST EDITION
Status
Current
Publication Date
Feb. 1, 1977
Committee Number
ISO TC 91