NEN-ISO 9397
Phenolic resins - Determination of free formaldehyde content
| Organization: | NEN |
| Publication Date: | 1 August 1990 |
| Status: | inactive |
| ICS Code (Thermosetting materials): | 83.080.10 |
scope:
This International Standard specifies 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.
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