The corrosion removing compound covered by this specification is intended for use as a soil, scale and corrosion remover in the cleaning of certain metal surfaces. This cleaner should not be used for cleaning zinc-coated or items, nor used as a metal conditioner for subsequent surface coating.

Application. The corrosion removing compound (liquid) when used at the recommended con-centration and temperature will satisfactorily remove water deposits; products of corrosion, and certain types of food stains from metal surfaces. However, food stains not removed by the above treatment can be removed by a pretreatment in a hot alkaline bath followed by a water rinse. The solutions used in the pretreatment should have no greater corrosive action on the metal than the corrosion removing compound.