ISO 120:1977
ISO 120:1977 Plastics – Phenol-formaldehyde mouldings – Determination of free ammonia and ammonium compounds – Colorimetric comparison method
CDN $86.00
Description
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.
Edition
1
Published Date
1977-10-01
Status
PUBLISHED
Pages
2
Language
English
Format
Secure PDF
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Abstract
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.
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