... purity, be supplied regularly with competitive price and super quality here 1,2,3-Benzotriazole, 99.8% purity: White ... , benzene,toluene,chloroform and dimethylformamide, and slightly soluble in water. It's mainly used as rust-preventer, antifreezing ... for high molecular materials (polyester and polyesteramide) capacity of ultraviolet resistance and anti- static electricity, photographic antifogging ...