ISO 4321:1977
Current
The latest, up-to-date edition.
Washing powders — Determination of active oxygen content — Titrimetric method
Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users
English, French
01-09-1977
Important note : Users cannot be edited or removed once added to your Multi user PDF.
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.
| DevelopmentNote |
Also numbered as BS 3762-3.17(1983) (07/2005)
|
| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| NBN T 63 137 : 1980 | Identical |
| PN 92/C-04816 : 1992 | Identical |
| DIN ISO 4321:1982-04 | Identical |
| UNE 55546:1979 | Identical |
| NEN ISO 4321 : 1983 | Identical |
| BS 3762-0:1991 | Analysis of formulated detergents General introduction |
| BS 3762-0:1989 | Analysis of formulated detergents Introduction and general methods |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.