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See Chinese contents: GB 31604.45-2016 GB 31604.45-2016: Food contact materials for export -- Polymer materials -- Determination of isocyanates by high performance liquid chromatography
This Standard specifies the determination methods for toluene-2,6-diisocyanate, diphenylmethane-4,4-diisocyanate, toluene-2,4-diisocyanate, naphthalene-1,5- diisocyanate, phenyl isocyanate, hexamethylene diisocyanate and cyclohexyl isocyanate in plastics for food contact material and their products; this Standard specifies the determination method for the total amount of the above 7 isocyanates.
