ISO 2886:1973
Acetaldehyde for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
OVERVIEW
The principle consists in the evaporation to dryness of a test portion and dissolution of the residue in hydrochloric acid. Reduction of iron(III) by means of hydroxylammonium chloride. Formation of the iron(II)- 2,2'-dipyridyl complex. Photometric measurement of the coloured complex at a wavelength of about 522 nm. Specifies the use of a spectrophotometer or photoelectric absorptionmeter. As an alternative it is permitted to employ a visual method comparing the test solution with a series of reference solutions. Has also been approved by the IUPAC.
COMMENTS
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PRODUCT DETAILS
| Status | Withdrawn - 03 Jan 2024 |
|---|---|
| Edition | 1973 |
| No. of Pages | 3 |
| ICS Classification | 71.080.80 Aldehydes and ketones |
| Committee | ISO/TC 47 |
| Available for Purchase | For sale in Singapore only |
| Adoption | ISO |