ISO 2368:1972
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ISO 2368:1972
7207

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 

  •  :  Withdrawn
     : 1972-12
  •  : 1
     : 4
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.50 Salts

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