ISO 4321:1977

Washing powders — Determination of active oxygen content — Titrimetric method

Publication date: 1 sht 1977

General information

Current stage: 90.93 Effective date: 30 gush 2022

Originator: ISO

Owner: ISO/TC 91

Type: International Standard

ICS: 71.100.40

Gjuha: frëngjisht anglisht

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Statusi: Publikuar

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Scope

The determination consists in co-reduction, with liberation of oxygen, of the peroxyhydrate and potassium permanganate in an acid solution. Because of the specifity of washing powders and the relative stability of peroxyhydrates, the dissolution of washing powders is likely to be incomplete and may result in a loss of oxygen; these disadvantages have been avoited by adoption of a particular method of dissolution appropriate to the determination of active oxygen content. This method may be used for determing peroxyhydrates, for example sodium perborate.

Life cycle

NOW

PUBLISHED
ISO 4321:1977
90.93 Standard confirmed
30 gush 2022

National adoptions

SSH ISO 4321:1977

DPS

Pluhura larës - Përcaktimi i përmbajtjes së oksigjenit aktiv - Metoda titrimetrike

60.60 Standard published

DPS/KT 47 më tepër