Reference number
ISO 743:1976
© ISO 2024
ISO 743:1976
Sodium carbonate for industrial use — Determination of sulphate content — Barium sulphate gravimetric method
Edition 1
1976-02
Withdrawn
Withdrawn (Edition 1, 1976)

Abstract

The principle in dissolution of a test portion and separation of the insoluble matter. Precipitation of sulphate as barium sulphate in dilute hydrochloric acid medium. Separation of the precipitate obtained and ignition at 800 °C +- 25 °C and weighing. The method is applicable to products having a sodium sulphate content equal to or greater than 0,01 % (m/m). Replaces ISO Recommendation R 743-1968.

General information

  • Status
     : Withdrawn
    Publication date
     : 1976-02
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 3
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.060.50 
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