Online Encyclopedia


Online Encyclopedia
Originally appearing in Volume V14, Page 371 of the 1911 Encyclopedia Britannica.
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C9H8 INDENE, a hydrocarbon found in the fraction of the coal tar distillate boiling between 176° and182° C., and from which it may be extracted by means of its picrate (G. Kramer, A. Spilker, Ber., 1890, 23, p. 3276). It may also be obtained by distilling the calcium salt of hydrindene carboxylic acid, C6H4(CH2)2•CH•000H. It is an oil which boils at 179.5°-18o• 5°, and has a specific gravity 1.04 (15° C.). Dilute nitric acid oxidizes it to phthalic acid, and sodium reduces it in alcoholic solution to hydrindene, C9H10. A. v. Baeyer and W. H. Perkin (Ber., 1884, 17, p. 125) by the action of sodiomalonic ester on orthoxylylene bromide obtained a hydrindene dicarboxylic ester,
End of Article: C9H8 INDENE
INDEMNITY (through Fr. indemnite, Lat. indemnis, fr...
INDENTURE (through 0. Fr. endenture from a legal La...

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