ISO 172:1978

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Plastics - Phenol-formaldehyde mouldings - Detection of free ammonia

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ISO 172:1978

Plastics - Phenol-formaldehyde mouldings - Detection of free ammonia

PUBLISH DATE 1978
ISO 172:1978

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.

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