Codes & Standards - Purchase
ISO 2992:1974
Ammonium sulphate for industrial use -- Determination of iron content -- 2,2'- Bipyridyl photometric method
SKU: iso_008042_102602
Published by ISO
Publication Year 1974
1 Edition
3 pages
Product Details
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.