Fluidextractum Calumbae (Fldext. Calumb.), Fluidextract of Calumba, N.F.—Calumba (100%). Absolute alcohol content about 65 per cent.

Dosage: 2 Cc. or 30 minims (N.F.).

Tinctura Calumbae (Tr. Calumb.), Tincture of Calumba, U.S.P.—Calumba (20%) in alcohol and water. Absolute alcohol content about 55 per cent.

Dosage: 4 Cc. or 1 fluidrachm (U.S.P.).

*Calx (Calx), Calcium Oxide, U.S.P. (Lime, Quicklime).—CaO.

Hard, white, odorless masses with a caustic taste, forming with water calcium hydroxide, which is slightly soluble in water (1:84), insoluble in alcohol.

Action and Uses: As liquor calcis (an aqueous solution of calcium hydroxide), used as an antacid and mild alkali. As milk of lime (a mixture of calcium hydroxide and water), frequently used as a disinfectant.

*Linimentum Calcis (Lin. Calc.), Lime Liniment, U.S.P. (Carron Oil).—Lime water (50%) and linseed oil.

Uses: Topical application, used especially for burns.

*Liquor Calcis (Liq. Calc.), Solution of Calcium Hydroxide, U.S.P. (Lime Water).—Ca(OH)2 (not less than 0.14%).