-Definition. - A dibasic organic acid, C8H14(COOH)2, obtained by the oxidation of camphor.

Origin. - Obtained by the oxidation of camphor through the action of nitric acid.

Description and Properties. - White, acicular crystals, odorless, and of a weak, acid, and slightly astringent taste. Soluble in hot water, alcohol, ether, and fatty oils; almost insoluble in cold water.

Dose. - 10-30 grains (0.6-2.0 Gm.) [15 grains (1 Gm.), U. S. P.].