[Benzotriazole]1 can be absorbed on metal surface and form a thin film to protect copper and other metals.Benzotriazole(BTA) is bitter,soluble in alcohol and slightly soluble in water. It's mainly used as rust-preventer, antifreeze, antioxidant (in lubricating oil, hydraulic oil, brake oil, transformer's oil), emulgent, water stabilizer, the additive for high molecular materials (polyester and polyesteramide) capacity of ultraviolet resistance and anti-static electricity, photographic antifogging agent, copper mine flotation, metal's slow corrosion etc.
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