Aktívna norma | Vydaná: 01.12.1973

ISO 2868:1973

Surface active agents — Detergents — Anionic-active matter stable to acid hydrolysis — Determination of trace amounts
(Agents de surface — Détergents — Matiere active anionique stable a l´hydrolyse acide — Détermination de faibles teneur)

Dostupné jazyky: Anglicky, Francúzsky

Dostupné prevedenie: Elektronické PDF, Tlačené

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Podrobné informácie

Označenie: ISO 2868:1973

Dátum vydania: 01.12.1973

Stránok: 2

Krajina: Medzinárodná technická norma

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Anotácia

Description / Abstract: The sample is hydrolyzed by refluxing under acid conditions. The non-hydrolyzable anionic-active matter is determined by the direct two-phase titration procedure describes in ISO 2271. This method is applicable to the determination of cyclic sulphonates in alkylphenol ether sulphates and of small amounts of sulphonates in sulphated fatty alcohols. The molar mass of the anionic matter must be known or previously determined, if its content is expressed as percentage by mass.

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