Abstract 

The method is applicable to products having a content greater than 0,020 %. The principle consists in dissolution of a test portion by either alkaline or acid fusion. Reduction of the iron(III) by hydroxylammonium chloride. Formation of the iro(II)-1, 10-phenanthroline complex in a buffered medium (pH value between 3,5 and 4,2) Photometric measurement of the coloured complex at a wavelength of about 510 nm.


General information

  • Status :  Withdrawn
    Publication date : 1972-12
  • Edition : 1
    Number of pages : 4
  • :
    ISO/TC 47
    Chemistry
  • 71.060.50
    Salts

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