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.
Status: WithdrawnPublication date: 1995-04
Edition: 2Number of pages: 3
Technical Committee: ISO/TC 61/SC 12 Thermosetting materials
- ICS :
- 83.080.10 Thermosetting materials
ISO 9397:1995Stage: 95.99
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