Reference number
ISO 2992:1974
International Standard
ISO 2992:1974
Ammonium sulphate for industrial use — Determination of iron content — 2,2'- Bipyridyl photometric method
Edition 1
1974-04
Read sample
ISO 2992:1974
8042
Published (Edition 1, 1974)
This publication was last reviewed and confirmed in 2019. Therefore this version remains current.

ISO 2992:1974

ISO 2992:1974
8042
Language
Format
CHF 42
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Abstract

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.

General information

  •  : Published
     : 1974-04
    : International Standard under systematic review [90.20]
  •  : 1
     : 3
  • ISO/TC 47
    71.060.50 
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