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ISO 8799:1988
M00001203
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ISO 8799:1988 Surface active agents -- Sulfated ethoxylated alcohols and alkylphenols -- Determination of content of unsulfated matter
standard by International Organization for Standardization, 04/01/1988
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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.