ACTION AND USES: Demulcent; chiefly as a vehicle to suspend insoluble substances in aqueous mixtures.
_*Mucilago Acaciae (Mucil. Acac.), Mucilage of Acacia, U.S.P._--Acacia (35%) in water.
DOSAGE: 15 Cc. or 4 fluidrachms (U.S.P.).
_Syrupus Acaciae (Syr. Acac.), Syrup of Acacia, U.S.P._--Acacia (10%) in sugar and water.
=ACETA, VINEGARS.=--A vinegar is a solution of vegetable principles either in diluted acetic acid or in a mixture of diluted acetic acid and alcohol. For Acetum Aromaticum, see under =Oleum Lavandulae=; for Acetum Opii and Acetum Scillae, see under =Opium= and =Scilla=, respectively.
=*Acetanilidum (Acetanil.), Acetanilid, U.S.P.= (Acetanilide, Antifebrin).--C{ 6}H{ 5}NH.CH{ 3}CO.
A white, odorless, crystalline powder, with a slightly burning taste. Slightly soluble in water (1:190), very soluble in alcohol (1:3.4) and in chloroform (1:3.7). Incompatible with spirit of nitrous ether and forms pasty masses when triturated with chloral or antipyrin.
ACTION AND USES: Analgesic, antipyretic and, in excessive doses, a cardiac depressant. Used particularly to relieve headache and neuralgic pains. A habit-forming drug. If used over a long period of time, it may produce a severe anemia.
DOSAGE: 0.2 Gm. or 3 grains (U.S.P.) in powders which may be placed in capsules, or tablets which should be crushed before swallowing. It is well to begin with 0.1 Gm. or about 1-1/2 grains, and to repeat cautiously.
_Pulvis Acetanilidi Compositus (Pulv. Acetanil. Co.), Compound Acetanilid Powder, N.F._--Acetanilid (70%), caffeine (10%) and sodium bicarbonate (20%).
USES: Irrational acetanilid preparation. The caffeine does not diminish the toxicity, nor does the bicarbonate increase the solubility of acetanilid, as was at one time supposed.
=Acetonum (Aceton.), Acetone, U.S.P.= (Dimethyl-Ketone).
A colorless liquid, with an ethereal odor and a pungent sweetish taste. Miscible with water, alcohol, ether and chloroform.
=*Acetphenetidinum (Acetphen.), Acetphenetidin, U.S.P. (Phenacetin).=--C{ 6}H{ 4}(OC{ 2}H{ 5}).NH.CH{ 3}CO.
White, odorless, slightly bitter, crystalline scales or powder. Very slightly soluble in water (1:1310), soluble in alcohol (1:15) and in chloroform (1:14).
ACTION AND USES: Analgesic, antipyretic and, in excessive doses, a cardiac depressant. Used particularly for the relief of headache and neuralgic pains and in the treatment of mild fevers. A habit-forming drug. If used for a long period of time, it may produce a severe anemia.