ISO 4321:1977
Washing powders; Determination of active oxygen content; Titrimetric method
- Standard No.
- ISO 4321:1977
- Release Date
- 1977
- Published By
- International Organization for Standardization (ISO)
- Latest
- ISO 4321:1977
- 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.
ISO 4321:1977 history
- 1977 ISO 4321:1977 Washing powders; Determination of active oxygen content; Titrimetric method
