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ISO 4321:1977

Washing powders — Determination of active oxygen content — Titrimetric method
1. 9. 1977.

Опште информације

90.93     30. 8. 2022.

ISO

ISO/TC 91

Međunarodni standard

71.100.40  

francuski   engleski  

Kupovina

Objavljen

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Apstrakt

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.

Životni ciklus

TRENUTNO

OBJAVLJEN
ISO 4321:1977
90.93 Odluka o potvrđivanju standarda
30. 8. 2022.

Nacionalna preuzimanja

SRPS ISO 4321:1992  
ISS

Praškovi za pranje - Određivanje sadržaja aktivnog kiseonika - Volumetrijska metoda (identičan sa ISO 4321:1977)

90.93   Odluka o potvrđivanju standarda

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