NS EN 1890 : 2ED 2006

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Principle
5 Reagents
6 Apparatus
7 Preparation and storage of samples
8 Procedure
9 Expression of results
10 Precision
11 Test report
Annex A (informative) Bibliography

Defines procedures for determining the cloud point of solutions of non-ionic surface active agents obtained by the reaction of ethylene oxide with a hydrophobic base molecule. Applicable mainly to surfactants obtained by reaction of ethylene oxide with hydrophobic base molecules, eg fatty alcohols, fatty acids, long-chain alkylphenols, fatty amines, fatty acid esters of sugar derivatives among other ethoxylated non-ionic surfactants, which are the most commonly used.