Reference number
ISO 9397:1995
© ISO 2024
ISO 9397:1995
Plastics — Phenolic resins — Determination of free-formaldehyde content — Hydroxylamine hydrochloride method
Edition 2
1995-04
Withdrawn
Withdrawn (Edition 2, 1995)

Abstract

Cancels and replaces the first edition (1989). Lays down a method of chemically determining free formaldehyde in phenolic resins by potentiometric titration, in aqueous or organic solution. The method is applicable to resins with free-formaldehyde contents up to and including 15 % (m/m). For free-formaldehyde contents between 15 % (m/m) and 30 % (m/m), it may be necessary to adjust the concentrations of the standard volumetric solutions used accordingly. This method must not be used in the presence of hexamethylenetetramine.

General information

  • Status
     : Withdrawn
    Publication date
     : 1995-04
    Stage
    : Withdrawal of International Standard [95.99]
  • Edition
     : 2
    Number of pages
     : 3
  • Technical Committee :
    ISO/TC 61/SC 12
    ICS :
    83.080.10 
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