Coal tar

Coal tar, TarCOAL PITCH (Kam. - ug. tar), viscous black liquid with characteristic phenolic smell; product of coking of black coals Coal tar — black, viscous liquid with strong caustic smell. Complex mixture of more than 1000 aromatic compounds, especially polycyclic aromatic hydrocarbons and heterocyclic compounds from which about 500 are revealed and identified.
Coal tar turns out in process of manufacture of furnace coke. When coking coal coke oven gas at which condensation coal tar turns out is emitted. From coal tar by method of distillation receive benzene, toluene, naphthalene, coal oils, inden - cumaron resins, drying oil, high - temperature pitch and the calcinated pitch coke.