Online Encyclopedia

ACENAPH

Online Encyclopedia
Originally appearing in Volume V01, Page 135 of the 1911 Encyclopedia Britannica.
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ACENAPH rHENE, C12H1o, a hydrocarbon isolated from the fraction of coal-tar boiling at 260°—270° by M. P. E. Berthelot, who, in conjunction with Bardy, afterwards synthesized it from a-ethyl naphthalene (Ann. Chem. Phys., 1873, vol. xxix.). It forms white needles (from alcohol), melts at 950 and boils at 2780. Oxidation gives naphthalic acid (1.8 naphthalene dicarboxylic acid). Acenaphthalene, C12 H8, a hydrocarbon crystallizing in yellow tables and obtained by passing the vapour of acenaphthene over heated litharge. Sodium amalgam reduces it to acenaphthene; chromic acid oxidizes it to naphthalic acid.
End of Article: ACENAPH
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