ISO 4320:1977
Non-ionic surface active agents; Determination of cloud point index; Volumetric method
- Standard No.
- ISO 4320:1977
- Release Date
- 1977
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 4320:1977
- Scope
- 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.
ISO 4320:1977 history
- 1977 ISO 4320:1977 Non-ionic surface active agents; Determination of cloud point index; Volumetric method
