This standard was last reviewed and confirmed in 2019. Therefore this version remains current.
Applicable to Fe contents of equal to or more than 0.0001 % (m/m). The reaction bases on the reduction of iron(III) by hydroxylammonium chloride. Formation of the complex between iron(II) and 2,2'-dipyridyl in a buffered medium (pH value between 4.5 and 6). Photometric measurement of the coloured complex at a wavelength of about 522 nm. Has also been approved by the IUPAC.
Status : PublishedPublication date : 1974-04
Edition : 1Number of pages : 3
Buy this standard
A standard is reviewed every 5 years
Revisions / Corrigenda