NORMSERVIS s.r.o.

ISO 2868:1973

Surface active agents — Detergents — Anionic-active matter stable to acid hydrolysis — Determination of trace amounts

NORMA vydaná dňa 1.12.1973

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Informácie o norme:

Označenie normy: ISO 2868:1973
Dátum vydania normy: 1.12.1973
Počet strán: 2
Približná hmotnosť: 6 g (0.01 libier)
Krajina: Medzinárodná technická norma
Kategória: Technické normy ISO

Anotácia textu normy ISO 2868:1973 :

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.