1) 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2) low poison, ... ,photographic antifogging agent,copper mine flotation,metal's slow corrosion etc. Safety properties:It's not inflammable ... drums with plastic bags in.Guide nameGuidePurity≥99.8%Chroma≤NO.40Moisture≤0.04%Melting point≥97 ... )capacity 1,2,3-Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical