Abstract 

The principle of the analysis consists in acidification of a test solution by addition of an excess of standard volumetric sulphuric acid solution and back-titration with standard volumetric sodium hydroxide solution in the presence of methyl red- methylene blue mixed indicator.


General information

  • Status :  Withdrawn
    Publication date : 1973-04
  • Edition : 1
    Number of pages : 1
  • :
    ISO/TC 47
    Chemistry
  • 67.220.20
    Food additives
    71.060.50
    Salts

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