ISO 4325:1990
Current
The latest, up-to-date edition.
Soaps and detergents — Determination of chelating agent content — Titrimetric method
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English, French
19-04-1990
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A test portion of the sample is dissolved in water, the pH of the solution adjusted to 4.65 and the solution titrated against standard copper(II) sulphate solution using 1-(2-pyridylazo)-2-naphthol as indicator. Principally the method has been designed principally for determining ethylenediaminetetraacetic acid (EDTA) and it salts. Before determining other chelating agents, or determining ethylenediaminetetraacetic acid in the presence of other chelating agents, the applicability of the method should be confirmed.
| DevelopmentNote |
Also numbered as BS 3762-3.23(1990) (07/2005)
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| DocumentType |
Standard
|
| Pages |
2
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NEN ISO 4325 : 1990 | Identical |
| BS 1715-2.9:1990 | Similar to |
| NF ISO 4325 : 1990 | Identical |
| UNE 55544:1992 | Identical |
| IS 16829 : 2018 | Identical |
| PN ISO 4325 : 2000 | Identical |
| NBN ISO 4325 : 1994 | Identical |
| BS 3762-3.23(1986) : LATEST | Similar to |
| BS 3762-0:1991 | Analysis of formulated detergents General introduction |
| BS 1715-1:1991 | Analysis of soaps General introduction, sampling, and test for presence of synthetic anionic-active surface active agents |
| BS 3762-0:1989 | Analysis of formulated detergents Introduction and general methods |
| BS 1715-1:1989 | Analysis of soaps. General introduction, sampling, and test for presence of synthetic anionic-active surface active agents |
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