Chemical name hydrochloric acid (HCL) is dangerous yet useful. It is extremely caustic and corrosive. Safe handling precautions must be taken. The fumes alone are enough to cause effects on humans, animals and equipment. It is used for pH reduction, alkalinity reduction, acid washing pools and concrete. Follow manufacturer instructions and labels. Always refer to SDS for safety regulations. Size available: 1, 5, 15 or 55 gallon drums. Must add drum deposit to your cart. Also available Muriatic Acid Bulk. Local delivery, Chicagoland area only.