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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 120:1977

ISO 120:1977 Plastics – Phenol-formaldehyde mouldings – Determination of free ammonia and ammonium compounds – Colorimetric comparison method

CDN $85.00

SKU: 6d15792fcbf1 Category:

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 Detail Icon

English

Format Secure Icon

Secure PDF

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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