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ISO 120:1977

Current

Current

Plastics — Phenol-formaldehyde mouldings — Determination of free ammonia and ammonium compounds — Colorimetric comparison method

Available format(s)

Hardcopy , PDF

Language(s)

English, French

Published date

10-01-1977

US$63.00
Excluding Tax where applicable
Summarise this standard

Specification of a semi-quantitative method. The content of free ammonia in a moulded article is of importance, when corrosion of metal inserts or contamination in contact with the article has to be considered. Distillation of the aqueous extract from a powdered test portion, coloration of the distillate by reaction with Nessler reagent and comparison of the colour with that of standard matching solutions.

Committee
ISO/TC 61/SC 12
DocumentType
Standard
Pages
2
PublisherName
International Organization for Standardization
Status
Current

US$63.00
Excluding Tax where applicable