The principle of the analysis consists in dissolution of a test portion and addition, in a dilute acid medium, of mercuric salts which, with the chloride ions, form soluble and only slightly ionized mercury(II) chloride. Indication of the completion of the reaction by the appearance of a violet coloration due to the reaction between the excess of mercury(II) ions and the diphenylcarbazone used as indicator.

General information

  • Status :  Withdrawn
    Publication date : 1973-04
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 47
  • 71.060.50

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