a flame retardant polycarbonate composition , comprising in admixture : an aromatic polycarbonate resin , an ortho - methyl substituted aromatic dihydroxy compound , and an additional flame retardant additive , said ortho - methyl substituted aromatic dihydroxy compound and said additional flame retardant additive being present in an amount sufficient to improve the flame retardant properties of said aromatic polycarbonate resin .