1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2) ... , and slightly soluble in water. Uses:It's mainly used as rust-preventer,antifreezing liquid,antioxidant additive ... including lubricating oil,hydraulic oil,brake oil,transformer's oil),emugent,water stabilizer,the additive for high ... capacity 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical