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

Standard No.

ISO 172:1978

Release Date

1978

Published By

International Organization for Standardization (ISO)

Latest

ISO 172:1978

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.

ISO 172:1978 history

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