HYDROCHLORIC acid: we can say that hydrochloric acid is also known with the name of " Acid muriatic ". This acid is made with salt current ( 41 sodium chloride; treated with sulfuric acid and dissolving the gas ( 41 hydrogen chloride; in water. It is a colorless liquid in its pure and beige, State of pajoso color in its commercial version. In both forms he emits vapours toxic and penetrating. This acid is widely used in chemical industries for cleaning and burnishing metal surfaces, production of hydrochloric gas, tanned skins and try to oils and fats.