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CHRYSENE, a hydrocarbon discovered by Laurent in the high boiling point fractions of coal tar distillate, is produced in small quantity in the distillation of amber, or on passing the vapour of phenyl-naphthyl-methane through a red-hot tube. When impure, it is of a yellow colour; hence its name (Xpvieos, golden less plates or octahedra (from benzene), which exhibit a violet fluorescence, and melt at 25o C and boil at 448 C. Chromic acid in glacial acetic acid solution oxidizes it to chrysoquinone C18H1002, which when distilled with lead oxide gives chrysoketone C17H100.


Everest, The Higher Coal-tar Hydrocarbons Bibliograpiiy.---A. E. Everest, The Higher Coal-tar Hydrocarbons