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Status : Active
Standard Type : Main
Document No : ISO 6843:1988
Document Year : 1988
Pages : 5
Edition : 1
Section Volume : Surface active agents (ISO/TC 91.)
By successive extraction, separation, evaporation, redissolution, and filtration through an ion-exchange resin the contents of sodium chloride, anionic-active matter, polyglycol, and polyglycol sulfate are determined. From the content of anionic surface active agent (alkylether sulfate) and the anionic surface active matter content determined by two-phase titration, the mean relative molecular mass is estimated.