ISO/R 909:1968
Withdrawn
Hydrochloric acid for industrial use — Determination of iron content — 2,2'- Bipyridyl spectrophotometric method
Hardcopy , PDF
English, French
12-01-1968
03-22-2019
The principle consists in evaporation of the test portion, taking up by means of hydrochloric acid and reduction of iron(III) by means of hydroxylammonium chloride. Formation of an iron(II)-2.2'-bipyridyl complex in a buffered medium at a pH value between 4.5 and 6. Photometric measurement of the coloured complex at a wavelength of about 522 nm.
| Committee |
ISO/TC 47
|
| DocumentType |
Standard
|
| Pages |
5
|
| PublisherName |
International Organization for Standardization
|
| Status |
Withdrawn
|
| Standards | Relationship |
| NBN T 03 006 : 1979 | Identical |
| NFT 20 253 : 1968 | Similar to |
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