ISO 2997:1974
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ISO 2997:1974
8047

Abstract  Preview

Applicable to products having sulphate contents equal to or more than 0.0005 % (m/m). Analysis by reduction of the sulphate to sulphide by a mixture of hydriodic acid and hypophosphorus acid. Absorption of the hydrogen sulphide evolved in a mixture of acetone and sodium hydroxide solution. Titration with a standard volumetric solution of mercury(II) acetate in the presence of dithizone as indicator. Has also been approved by the IUPAC.


General information 

  •  :  Published
     : 1974-11
  •  : 1
     : 3
  •  : ISO/TC 47 Chemistry
  •  :
    71.060.30 Acids

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