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ISO 172:1978

Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia
1 gush 1978

General information

90.93     18 qer 2025

ISO

ISO/TC 61/SC 12

International Standard

83.080.10  

frëngjisht   anglisht  

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Scope

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.

Life cycle

NOW

PUBLISHED
ISO 172:1978
90.93 Standard confirmed
18 qer 2025