Reference number
ISO 2994:1974
© ISO 2024
ISO 2994:1974
Ammonium sulphate for industrial use — Determination of matter insoluble in water — Gravimetric method
Edition 1
1974-04
Withdrawn
Withdrawn (Edition 1, 1974)

Abstract

Specifies the dissolution of a test portion in water; filtration under vacuum on the filter crucible, thorough washing of the filter crucible and detection of the absence of sulphates in the wash water by a barium chloride test, drying and weighing of the insoluble residue. Has also been approved by the IUPAC.

General information

  • Status
     : Withdrawn
    Publication date
     : 1974-04
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.060.50 
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