ISO 3239:1975
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ISO 3239:1975
8451

Abstract 

Applicable to products the Fe content of which is equal to or more than 0.0003 % (m/m). Dissolution of the test sample in delute hydrochloric acid and bromine water by heating. Preliminary reduction of the iron(III) by hydroxylammonium chloride. Formation of the iron(II)-1,10-phenanthroline complex in a buffered medium. Photometric measurement of the coloured complex at a wavelength of about 510 nm.


General information 

  •  :  Withdrawn
     : 1975-07
  •  : 1
     : 4
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.50 Salts

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