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ISO 120:1977
Plastics -- Phenol-formaldehyde mouldings -- Determination of free ammonia and ammonium compounds -- Colorimetric comparison method
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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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Edition: 1 (Monolingual) ICS: 83.080.10 Status: Published Stage: 90.93 (2009-06-26) TC/SC: ISO/TC 61/SC 12 Number of Pages: 2 -
No revision information available
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No corrigenda or amendments available
