Bisphenol F-Diglycidylether (BFDGE) und Folgeprodukte in Konservenfüllgütern: Synthese und Analytik

Bisphenol F-diglycidyl-ether (BFDGE) is added to vinylic organosol (PVC) lacquers used for inner coatings of food cans in order to scavenge released hydrochloric acid during the heat treatment of the coating procedure. In the original varnish (NOVO-lacquer), BFDGE is present in form of different isomers as monomer, dimere, and oligomere. All these compounds, together with their chlorohydroxy derivatives, were found in canned foods. Unfortunately, pure standard compounds, which are necessary for proper analysis and toxicological studies, are not commercially available. Hence, in the present paper the synthesis and analyses (TC, GC, HPLC) of these substances is presented. The synthesized compounds were characterized by using mass and H-NMR spectrometry. In various samples from the Austrian market the sum of the concentration of the above compounds exceeded frequently the official limit for the analogue BADGE compounds of 1 mg/kg, mainly by the presence of the cholorhydrine derivatives.