ISO 3124:1976
Crude sodium borates for industrial use — Determination of iron soluble in alkaline medium — 2,2′- Bipyridyl photometric method
Crude sodium borates for industrial use — Determination of iron soluble in alkaline medium — 2,2′- Bipyridyl photometric method
Crude sodium borates for industrial use — Determination of iron soluble in alkaline medium — 2,2′- Bipyridyl photometric method
Applicable to products in which the content of soluble iron exceeds 2 mg/kg. The preparation of the test solution is carried out according to ISO 2217. Reduction of the iron(III), contained in the aliquot part of the solution, with hydroxylammonium chloride. Formation of the coloured complex between iron(II) and 2,2′-dipyridyl in buffered solution. Photometric measurement of the coloured complex at a wavelength of about 522 nm.
| Edition | 1976 |
|---|---|
| Published Date | 1976 |
| Published By | International Standardization Organisation |
| Page Count | 3 |