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PYRENE, C16H

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Originally appearing in Volume V22, Page 687 of the 1911 Encyclopedia Britannica.

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PYRENE, C16H

PYRENE, C16H ,o, a See also:

HYDROCARBON

hydrocarbon found together with chrysene in the last portion of the See also:

COAL

coal See also:

TAR

tar distillate, and also in " Stupp " See also:

FAT (O.E. fdett; the word is common to Teutonic languages, cf. Dutch vet, Ger. Fett, &c., and may be ultimately related to Greek Irian, and =apos, and Sanskrit pivan)

fat. The crude solid product from the tar distillate is digested with See also:

CARBON (symbol C, atomic weight 12)

carbon bisulphide to dissolve the pyrene, the See also:

SOLUTION (from Lat. solvere, to loosen, dissolve)

solution filtered and the solvent evaporated. The See also:

RESIDUE (through the French, from the Lat. residuum, a remainder, from residere, to remain)

residue is dissolved in See also:

ALCOHOL

alcohol and to the See also:

COLD (in O. Eng. cald and ceald, a word coming ultimately from a root cognate with the Lat. gelu, gelidus, and common in the Teutonic languages, which usually have two distinct forms for the substantive and the adjective, cf. Ger. Kolte, kalt, Dutch koude

cold saturated solution a cold alcoholic solution of picric See also:

ACID (from the Lat. root ac-, sharp; acere, to be sour)

acid is added. The picrate so formed is then decomposed by See also:

AMMONIA (NH3)

ammonia. On its separation from " Stupp " fat see E. See also:

BAMBERGER, LUDWIG (1823-1899)

Bamberger and M. See also:

Philip, See also:

ANN

Ann., 1887, 240, p. 161. It crystallizes in See also:

MONOCLINIC

monoclinic tables which melt at 148-149° C. Chromic acid oxidizes it to pyrene quinone, C,6H,02, and pyrenic acid, C16H,606. The picrate, which is easil1 soluble in See also:

BENZENE, C6H6

benzene, crystallizes in See also:

long red needles melting at 222 . When heated with hydriodic acid and See also:

PHOSPHORUS (Gr. 4ws, light, sPEpety, to bear)

phosphorus to zoo° C. it yields a hexahydride.

It has been obtained synthetically by M. See also:

FREUND, WILHELM (1806—1894)

Freund and H. Michaels (Ber., 1897, 30, p. 1383) by distilling thebenol over See also:

ZINC

zinc dust in a stream of See also:

HYDROGEN [symbol H, atomic weight x-oo8 (0=16)]

hydrogen, or by the See also:

ACTION

action of hydriodic acid and phosphorus at 220° C. on thebenol.

End of Article: PYRENE, C16H

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