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EN ISO 6845:2003

Surface active agents - Technical alkane sulfonates - Determination of the mean relative molecular mass of the alkane monosulfonates and the alkane monosulfonate content (ISO 6845:1989) EN ISO 6845:2003

Publication date:   Oct 23, 2003

General information

90.93 Standard confirmed   May 1, 2008

CEN

CEN/TC 276 Surface active agents

European Norm

71.100.40   Surface active agents

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Scope

A test portion is dissolved in ethanol and the solution is acidified. The alkane monosulfonic acids are separated from the alkane disulfonates and sulfate ions by extraction with light petroleum. The light petroleum phase is evaporated and the residue is solved in ethanol. Traces of alkali are removed by means of a cation-exchange column. The eluate is neutralized with carbonate-free sodium hydroxide solution. The sodium alkane monosulfonates so formed are dried and weighed. The mean relative molecular mass of the alkanemonosulfonates and the alkanemonosulfonate content are calculated.

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PUBLISHED
EN ISO 6845:2003
90.93 Standard confirmed
May 1, 2008

Relations

Adopted from ISO 6845:1989 IDENTICAL