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ISO 4320:1977 PDF
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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.
| Edition | 1977 |
|---|---|
| Published Date | 1977 |
| Published By | International Standardization Organisation |
| Page Count | 3 |
