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ISO 172:1978

Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia ISO 172:1978

Publication date:   Aug 1, 1978

General information

90.93   Standard confirmed   Jun 18, 2025

ISO

ISO/TC 61/SC 12 Thermosetting materials

International Standard

83.080.10   Thermosetting materials

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Published

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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
Jun 18, 2025




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