Reference number
ISO 1391-4:1976
© ISO 2024
ISO 1391-4:1976
Paraformaldehyde for industrial use — Methods of test — Part 4: Determination of water-insoluble matter
Edition 1
1976-12
Withdrawn
Withdrawn (Edition 1, 1976)

Abstract

The principle of the procedure consists in the dissolution of a test sample in a highly diluted sodium hydroxide solution, filtration by using a tared filter crucible, drying of the residue at (100 2) °C. Determination of the in water insoluble substances by differences. - ISO 1391, Parts 1 to 4, replace ISO Recommendation R 1391-1970.

General information

  • Status
     : Withdrawn
    Publication date
     : 1976-12
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 1
    Number of pages
     : 1
  • Technical Committee :
    ISO/TC 47
    ICS :
    71.080.80 
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