From a methanolic solution of the test portion, the unsulfated matter is separated on an ion-exchange column (filled with a mixture of cation-exchange resins and anion-exchange resins). The unsulfated matter is recovered from the eluate by evaporation and weighing of the residue.
Status : WithdrawnPublication date : 1988-03
Edition : 1Number of pages : 2
Technical Committee:Surface active agents