ISO 2869:1973 Preview
Surface active agents -- Detergents -- Anionic-active matter hydrolyzable under alkaline conditions -- Determination of hydrolyzable and non-hydrolyzable anionic-active matter
This standard was last reviewed and confirmed in 2017. Therefore this version remains current.
The determination is carried out as follows: Titration of an aliquiot portion of a sample solution with benzethonium chloride solution according to the direct two-phase titration procedure describes in ISO 2271. Hydrolysis by refluxing under alkaline conditions of a second aliquot portion of the sample solution. Titration of unhydrolyzed anionic-active matter with benzethonium chloride solution as before. Calculation of the contents of hydrolyzable and non-hydrolyzable anionic-active matter from the results obtained.
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