IDENTIFICATION OF POTENTIAL MIGRANTS FROM A VINYLIC ORGANOSOL VARNISHBY GAS-CHROMATOGRAPHY MASS-SPECTROMETRY AND LIQUID-CHROMATOGRAPHY MASS-SPECTROMETRY

The inner coating of food cans may include epoxy resins, using bisphen ol A diglycidyl ether (BADGE) as crosslinking agent. Unreacted BADGE a nd various derivatives mag. migrate into foodstuffs. As a prerequisite to migration studies, it is essential to identify all potential migra nts in solvent extracts of the coating. In this study the chemical str uctures of substances extracted from a vinylic organosol are determine d by gas and liquid chromatography, coupled to mass spectrometry, on t he basis of mass fragmentation patterns and/or comparison with authent ic samples. Two classes of substances are found: BADGE, the correspond ing monoethers and HCl adducts on one hand, and bisphenol F diglycidyl ether isomers and derivatives on the other hand., The possible origin of these compounds is discussed.