BS EN ISO 8974:1995 Plastics. Phenolic resins. Determination of residual phenol content by gas chromatography
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This International Standard specifies a gas chromatographic method for the measurement of the residual phenol content in phenolic resins.
For the determination of traces of phenol [< 0,5 % (m/m)], this International Standard must be modified.
For alkaline resins, the method is not usable. The phenol is not totally elutable, because it is in the phenolate state.
IMPORTANT NOTE The following apparatus and conditions are recommended. However, it is possible to use other ap- paratus and conditions (for example other detectors and capillary columns) if it has been verified that they give the same results with a precision of the same order.