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Norm
ISO 172:1978
Ausgabedatum: 1978 08 01
Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia
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 p...
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Herausgeber:
International Organization for Standardization
Format:
Digital | 1 Seiten
Sprache:
Englisch
ICS
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.