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sklademVydáno: 1973
ISO 2869:1973
ISO 2869:1973-Surface active agents — Detergents — Anionic-active matter hydrolyzable under alkaline conditions — Determination of hydrolyzable and non-hydrolyzable anionic-active matter
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Označení normy: | ISO 2869:1973 |
Počet stran: | 2 |
Vydání: | 1 |
Vydáno: | 1973 |
DESCRIPTION
ISO 2869:1973
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.