GB/T 5474-2016
Plastics.Phenol formaldehyde mouldings.Determination of free ammonia and ammonium compounds.Colorimetric comparison method (English Version)

Standard No.

GB/T 5474-2016

Language

Chinese, Available in English version

Release Date

2016

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 5474-2016

Replace

GB/T 5474-1985

Scope

This standard specifies the colorimetric method for the semi-quantitative determination of ammonia content in phenolic molded products. Determining the ammonia content of molded articles is particularly important when corrosion of metal inserts or food contamination due to contact with molded articles has to be considered.

GB/T 5474-2016 Referenced Document

• GB/T 12808-1991 Laboratory glassware--One-mark pipettes
• GB/T 6005-2008 Test sieves.Metal wire cloth,perforated metal plate and electroformed sheet.Nominal sizes of openings

GB/T 5474-2016 history

• 2016 GB/T 5474-2016 Plastics.Phenol formaldehyde mouldings.Determination of free ammonia and ammonium compounds.Colorimetric comparison method
• 1985 GB/T 5474-1985 Phenol-formaldehyde mouldings--Determination of free ammonia and ammonium compounds--Colorimetric comparison method