A substance used with water to produce soaps for washing or cleaning: soaps are usually sodium or potassium salts of fatty acids, produced by the action of an alkali, as caustic soda or potash, on fats or oils.
A substance used with water to produce soaps for washing or cleaning: soaps are usually sodium or potassium salts of fatty acids, produced by the action of an alkali, as caustic soda or potash, on fats or oils.