1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical ... ) low poison, LD50 for small mouse is 965mg/kg 1,2,3-BENZOTRIAZOLECAS NO.95-14-7Molecular weight:119 Chemical formulation:C6H5N3 ... ,the additive for high molecular materials'(polyester and polyesteramide)capacity 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment ...