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CSN EN 1890
Surface active agents - Determination of cloud point of non-ionic surface active agents obtained by condensation of ethylene oxide
|Number of Standard:||CSN EN 1890|
|Number of Standard:||ILNAS EN 1890|
EN 1890 Surface active agents - Determination of cloud point of non-ionic surface active agents obtained by condensation of ethylene oxide - This document specifies methods for the determination of the cloud point of solutions of non-ionic surface active agents obtained by the reaction of ethylene oxide with a hydrophobic base molecule. This document primarily applies to surfactants obtained by reaction of ethylene oxide with hydrophobic base molecules, such as fatty alcohols, fatty acids, long-chain alkylphenols, fatty amines, fatty acid esters of sugar derivatives among other ethoxylated non-ionic surfactants, which are by far the most commonly used. NOTE Other non-ionic surfactants containing other structural units, such as propylene oxide-ethylene oxide block copolymers, have distinctive behaviours that make the determination of the cloud point more difficult. This leads sometimes to a gradual turbidity over a temperature range of several degrees or even to the occurrence of two cloud points at significantly different temperatures.
Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.