Online Encyclopedia

C7H602 BENZOIC ACID

Online Encyclopedia
Originally appearing in Volume V03, Page 756 of the 1911 Encyclopedia Britannica.
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C7H602 BENZOIC ACID or CsHSO00H, the simplest representative of the aromatic acids. It occurs naturally in some resins, especially in gum benzoin (from Styrax benzoin), in dragon's blood, and as a benzyl ester in Peru and Tolu balsams. It can be prepared by the oxidation of toluene, benzyl alcohol, benzaldehyde and cinnamic acid; by the oxidation of benzene with manganese dioxide and concentrated sulphuric acid in the cold (L. Carius, Ann. 1868, 148, p. 51); by hydrolysis of benzonitrile or of hippuric acid; by the action of carbon dioxide on benzene in the presence of aluminium chloride (C. Friedel and J. M. Crafts, Ann. chim. phys. 1888 [6], 14, p. 441); by the action of carbon dioxide on monobrombenzene in the presence of sodium; by condensing benzene and carbonyl chloride in presence of aluminium chloride, the benzoyl chloride formedbeing subsequently hydrolysed; and similarly from benzene and chlorformamide:
End of Article: C7H602 BENZOIC ACID
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BENZIDINE (DIPARA-DIAMINO-DIPHENYL), NH2
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