fluoranthene

[English fluor (ene), and (phen)anthene (q. v.).] Chem.: C15H10. An aromatic hydrocarbon which occurs in the last portion of the solid hydrocarbon distillate from coal tar along with Pyrene, C16H10, and Chrysene, C15H12. They can be separated by converting them into picrate compounds, by melting them and gradually adding picric acid, or by di olving them in alcohol. Chrysene is only slightly soluble, and mixing the solution with an alcoholic solution of picric acid, C6H2(NO2)3(OH), the fluoranthene remains in the mother liquid and allows the mixed solution to crystallize. The picrates are decomposed by ammonia. Fluoranthene crystallizes out of alcohol in needles, which melt at 109. flû'-or-at-ěd, a . [Eng., ., fluor ; -ated.] Chem.: Combined with hydrofluoric acid (q. v.). flû-or-běn-zene, s. [Eng., ., fluor ( ine ), and benzene (q. v.).] Chem.: C6H5F. Obtained by heating calcium fluobenzoate with 43 parts of calcium hydrate. It melts at 40°, and boils at 180°. It is insoluble in water, but soluble in alcohol and in ether.