ISO-172 › Plastics - Phenol-formaldehyde mouldings - Detection of free ammonia

ISO-172 - 1ST EDITION - CURRENT


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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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83.080.10 (Thermosetting materials Including ebonite Silicones, see 71.100.55)

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Document Number

ISO 172:1978

Revision Level

1ST EDITION

Status

Current

Publication Date

Aug. 15, 1978

Committee Number

ISO TC 61/SC 12/WG 1