1) 1,2,3-Benzotriazole 99.8% 2) white granule or powder 3) water treatment chemical 4) rust-preventer,antifreezing liquid 1,2,3-BENZOTRIAZOLECAS NO.95-14 ... ,the additive for high molecular materials'(polyester and polyesteramide)capacity 1,2,3-Benzotriazole 99.8%, --Rust Preventer water treatment chemical ...