Flame retardant polycarbonate composition

A flame retardant aromatic carbonate polymer composition comprising in admixture an aromatic carbonate polymer and a minor amount of a metal salt of a mixture of monomeric and polymeric substituted and unsubstituted sulfonic acids of aromatic carboxylic acids and esters, or a metal salt of a polymeric substituted and unsubstituted sulfonic acids of aromatic carboxylic acids and esters, wherein said metal salts thereof are selected from the group consisting of alkali metals and alkali earth metals, and mixtures of these salts and said substituent on the metal salt of the substituted sulfonic acids of aromatic carboxylic acids and esters is selected from the group consisting of an electron withdrawing radical and mixtures of electron withdrawing radicals.