... 1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2) low ... , and slightly soluble in water. Uses:It's mainly used as rust-preventer,antifreezing liquid,antioxidant additive ... antifogging agent,copper mine flotation,metal's slow corrosion etc. Safety properties:It's not inflammable or explosive or ... 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical