ISO 6121:1988 Surface active agents -- Technical alkane sulfonates -- Determination of alkane monosulfonates content by direct two-phase titration

standard by International Organization for Standardization, 06/01/1988

Full Description

The determination is carried out in a consisting of an aqueous phase and a chloroform phase, in the presence of sodium sulfate, by titration against a standard volumetric cationic-active solution (benzethonium chloride), in the presence of an indicator consisting of a mixture of a cationic dye (dimidium bromide) and an anionic dye (acid blue 1).