Status : Published (Under review)
This standard was last reviewed and confirmed in 2020. Therefore this version remains current.
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Abstract

Specification of a semi-quantitative method. The content of free ammonia in a moulded article is of importance, when corrosion of metal inserts or contamination in contact with the article has to be considered. Distillation of the aqueous extract from a powdered test portion, coloration of the distillate by reaction with Nessler reagent and comparison of the colour with that of standard matching solutions.

General information

  • Status
     : Published
    Publication date
     : 1977-10
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 2
  • Technical Committee :
    ISO/TC 61/SC 12
    ICS :
    83.080.10 
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