Reference number
ISO 172:1978
© ISO 2024
International Standard
ISO 172:1978
Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia
Edition 1
1978-08
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Published (Edition 1, 1978)
This publication was last reviewed and confirmed in 2020. Therefore this version remains current.

ISO 172:1978

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Format
CHF 42
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Abstract

Specification of a qualitative method of detecting the presence of free ammonia or other volatile bases in phenol-formaldehyde mouldings by the exposure of an indicator paper to the vapour from a moistened powdered sample. It may be used when the absence of free ammonia is a requirement.

General information

  • Status
     : Published
    Publication date
     : 1978-08
    Stage
    : International Standard confirmed [90.93]
  • Edition
     : 1
    Number of pages
     : 1
  • Technical Committee :
    ISO/TC 61/SC 12
    ICS :
    83.080.10 
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