1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2) low poison, LD50 for small ... anstatic electricity,photographic antifogging agent,copper mine flotation,metal's slow corrosion etc. Safety properties:It's not inflammable or explosive ... polyesteramide)capacity 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical