O-xylene is made by fractionating and refining the mixed xylene which is roughly produced by restructure and fractionation. Product performance: Colorless, transparent liquid, aromatic scent, inflammable and explosive, the relative density of 0.867, distillation range of 143.5 ~ 145.5 degree celsius, the melting point of -25 degree celsius, the boiling point of 144 degree celsius, soluble in alcohol and ether, insoluble in water.