1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2) low poison, LD50 ... can be processed to be big flake, column, fine granular, powder. Properties:It's bitter, odorless, boiling point is 204°C ... resistance and anstatic electricity,photographic antifogging agent,copper mine flotation,metal's slow corrosion etc. Safety properties:It's not inflammable ...