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FLUORANTHENE, C15H10

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Originally appearing in Volume V10, Page 575 of the 1911 Encyclopedia Britannica.
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FLUORANTHENE, C15H10 , also known as idryl, a See also:hydrocarbon occurring with phenanthrene, See also:pyrene, See also:diphenyl, and other substances in " Stupp " See also:fat (the fat obtained in working up the See also:mercury ores in See also:Idria), and. also in the higher boiling fractions of the See also:coal See also:tar distillate. It was discovered by R. Fittigin 1878, who, with Gebhard and H. Liepmann, elucidated its constitution (see See also:Ann., 1879, 200, p. I). The See also:hydrocarbons are separated from the " Stupp " by means of See also:alcohol, the soluble portion on See also:distillation giving first phenanthrene and then a mixture of pyrene and fluoranthene. From the tar distillate, the chrysene can be fractionally precipitated, and the fluoranthene can be separated from most of the pyrene by fractional distillation in a partial vacuum. In either See also:case the two hydrocarbons are finally separated by fractional See also:crystallization of their picrates, which are then decomposed by See also:ammonia. Fluoranthene crystallizes in large slender needles or See also:monoclinic tables, melting at 10g-110° C. and boiling at 250—251° C. (6o mm.). It is easily soluble in hot alcohol, See also:ether and See also:carbon bisulphide. On oxidation with chromic See also:acid it forms a quinone, C15HSO2, and an a-diphenylene keto- CeHic carboxylic acid Cr,H3>CO2H• The picrate melts at 182—183° C.

End of Article: FLUORANTHENE, C15H10

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