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ISO 4321:1977

Washing powders -- Determination of active oxygen content -- Titrimetric method
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ISO 4321:1977

Washing powders -- Determination of active oxygen content -- Titrimetric method

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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.

SDO ISO: International Organization for Standardization
Document Number ISO 4321
Publication Date Not Available
Language en - English
Page Count
Revision Level
Supercedes
Committee ISO TC 91
Publish Date Document Id Type View
Not Available ISO 4321:1977 Revision