1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2 ... ) low poison, LD50 for small mouse is 965mg/kg 1, ... and slightly soluble in water. Uses:It's mainly used as rust-preventer,antifreezing liquid,antioxidant ... '(polyester and polyesteramide)capacity 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical ...