ISO 172:1978 PDF
Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia
Plastics — Phenol-formaldehyde mouldings — Detection of free ammonia
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 1
- Дата публикации:
- 1 августа 1978 г.
- Издание:
- ISO IS 172 edition 1 version 1
- ICS:
- 83.080.10
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.
Abstract
Overview
ISO 172:1978 specifies a for detecting the presence of or other in phenol‑formaldehyde mouldings (phenoplasts). The procedure detects alkaline vapours released from a powdered sample by exposing to the vapour in a sealed flask. ISO 172:1978 is intended for use where the is a requirement for the finished moulding.
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