scope:

This International Standard specifies methods of analysis of technical sodium alkylsulphates. It covers the following determinations: - Measurement of pH. - Determination of water content. - Determination of free alkalinity or free acidity. - Determination of total alkalinity. - Determination of matter extractable by light petroleum. - Determination of matter extractable by diethyl ether after acid hydrolysis (combined technical fatty alcohols). - Determination of sodium sulphate content. - Determination of sodium chloride content. It also sets out, in an annex, a general scheme of analysis. This International Standard is applicable only to technical sodium alkylsulphates in powder, paste of liquid form (aqueous solutions), free from any product extraneous to their manufacture.