DS/EN ISO 172:1999
Plastics - Phenol-formaldehyde mouldings - Detection of free ammonia

Standard No.

DS/EN ISO 172:1999

Release Date

1999

Published By

Danish Standards Foundation

Latest

DS/EN ISO 172:1999

Scope

This standard specifies 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 powdered sample. It may be used when the absence of free ammonia is a requirement.

DS/EN ISO 172:1999 history

• 1999 DS/EN ISO 172:1999 Plastics - Phenol-formaldehyde mouldings - Detection of free ammonia