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.
Status: PublishedPublication date: 1978-08
Edition: 1Number of pages: 1
Technical Committee: ISO/TC 61/SC 12 Thermosetting materials
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