| abstract |
In a process for the production of anthracene and carbazole and their secondary products from the anthracene oil obtained in coal tar distillation or its purification products, anthracene oil or the purification product red anthracene is converted into a melt without the addition of solvent, and the melt is cooled below the crystallization point of carbazole and anthracene Separates crystal material from the liquid phase and distills the crystal material to obtain pure anthracene and pure carbazole. |