ISO/R 1982:1971
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ISO/R 1982:1971
6714

Abstract 

The method is applicable to the determination of iron contents greater than 0,0001 % (m/m). The principle consists in evaporation of a test portion, taking up by means of hydrochloric acid and reduction of iron(III) by means of hydroxylammonium chloride. Formation of iron(II)-2,2' -dipyridyl complex in ammonium acetate medium. Photometric measurement of the coloured complex at a wavelength of about 522 nm.


General information 

  •  :  Withdrawn
     : 1971-05
  •  : 1
     : 4
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.30 Acids

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