An aqueous disinfectant composition, comprising trisodium phosphate, sodium carbonate, sodium bicarbonate and a quaternary ammonium halide such as cetyltrimethylammonium bromide is provided. The aqueous disinfectant composition may comprise from about 0.25% to about 3.0% by weight of trisodium phosphate, from about 0.25% to about 3.0% by weight of sodium carbonate, from about 0.25% to about 3.0% by weight of sodium bicarbonate, and from about 0.001% to about 0.1% by weight of a quaternary ammonium halide. The invention also includes the use of a composition, comprising trisodium phosphate, sodium carbonate, sodium bicarbonate and a quaternary ammonium halide in the preparation of an aqueous disinfectant formulation.
