Describes a method of analysis of anhydrous sodium carbonate and sodium carbonate decahydrate. The principle of analysis consists in heating of thin layers of a test portion to constant mass at 250 °C. The residue constitutes the non-volatile matter at 250 °C. The loss of mass represents water in its various forms plus half the carbon dioxide content of the hydrogen carbonate present. Replaces ISO Recommendation R 745-1968.

General information

  • Status :  Withdrawn
    Publication date : 1976-02
  • Edition : 1
    Number of pages : 2
  • :
    ISO/TC 47
  • 71.060.50

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