We are offering naphthenic acid. Cas#: 1338-24-5 einecs: 215-662-8 appearance: after refining it becomes light yellow to dark brown liquid with special odor. Content: 88% use: naphthenic acid metal salts are used to paints and inks to accelerate drying, unsaturated polyester resin curing agent and catalyst and also the stabilizer of plastic. Can be used to produce various oil additives, anti-wear agent and anti-rust agent ect. Be used to make rubber adhension agent, the cable, shipbuilding, wood and fabric of preservatives. Used to make synthetic detergent, surfactants, insecticides, fungicides and biological growth regulator. Also can be used as the solvent and extraction solvent.