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  • Status :  Withdrawn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
  • Edition : 2
    Number of pages : 3
  • :
    ISO/TC 61/SC 12
    Thermosetting materials
  • 83.080.10
    Thermosetting materials

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