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ISO 6842:1989

Surface active agents — Sulfated ethoxylated alcohols and alkylphenols — Determination of total active matter content

Publication date:   Sep 21, 1989

General information

90.93   Standard confirmed   Nov 1, 2024

ISO

ISO/TC 91 Surface active agents

International Standard

71.100.40   Surface active agents

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Scope

A test portion is boiled under reflux with ethanol in the presence of sodium sulphate. The solution is filtrated, the filtrate evaporated, and the residue weighed. Any sodium chloride present is determined by dissolution of the residue in aqueous acetone and titration with a standard volumetric silver nitrate solution. The mass of the residue is corrected for the sodium chloride content.

Life cycle

PREVIOUSLY

WITHDRAWN
ISO 6842:1983

NOW

PUBLISHED
ISO 6842:1989
90.93 Standard confirmed
Nov 1, 2024