... -Benzotriazole 99.8%, --metal's slow corrosion water treatment chemical 2) low poison, LD50 for small mouse ... oil,brake oil,transformer's oil),emugent,water stabilizer,the additive for high molecular materials'( ... of ultraviolet resistance and anstatic electricity,photographic antifogging agent,copper mine flotation,metal's slow corrosion etc ... .8%, --metal's slow corrosion water treatment chemical