... boiling range 230-300 °C, the main component are methyl naphthalene, biphenyl, indole, acenaphthene and so on.Is ... the separation and extraction biphenyl, methyl naphthalene, acenaphthene, fluorene, dibenzofurans and other products of raw materials, used to absorb ... benzene.In addition, for the preparation of anti-corrosion oil, production of quinoline, indole, dispersants, water reducing agent. ...