Codes & Standards - Purchase
ISO 4321:1977
Washing powders -- Determination of active oxygen content -- Titrimetric method
SKU: iso_010192_103752
Published by ISO
Publication Year 1977
1 Edition
2 pages
Product Details
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.