One-gallon container of muriatic acid is a hazardous chemical classified as UN 1789, Class 8, PG II. This chemical is corrosive and can cause severe damage to the skin and eyes if not handled properly. It should be stored and handled with strict safety measures, including the use of personal protective equipment. It is commonly used for cleaning and maintenance in swimming pools and other industrial purposes, but caution should be exercised when working with it. (one box 4 gal)
