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Norm
ISO 2460:1973
Issue date: 1973 04 01
Sodium hydrogen carbonate for industrial use — Determination of iron content — 1,10- Phenanthroline photometric method
The method is applicable to products having a content equal to or greater than 0,1 mg/kg. The principle concists in reduction of the iron(III) by hydroxylammoniumchloride...
Valid
Publisher:
International Organization for Standardization
Format:
Digital | 2 Pages
Language:
English
ICS
The method is applicable to products having a content equal to or greater than 0,1 mg/kg. The principle concists in reduction of the iron(III) by hydroxylammoniumchloride. Formation of a iron(II)-1,10-phennanthroline complex in a buffered solution. Photometric measurement of the coloured complex at a wavelength of about 510 nm.
