A dark-brown, odorless solid, with a metallic acid taste. Very soluble in water and in alcohol.
ACTION AND USES: "Alterative" apparently of no value.
_Liquor Auri et Arseni Bromidi (Liq. Aur. et Arsen. Brom.), Solution of Gold and Arsenic Bromide, N.F._--Contains hydrogen bromaurate (HAuBr{ 4}) and arsenic acid (H{ 3}AsO{ 4}) obtained by oxidizing a solution of arsenous oxide with bromine and adding bromauric acid.
=Acidum Citricum (Acid. Cit), Citric Acid, U.S.P.=
Colorless, odorless crystals. Very soluble in water (1:0.5) and in alcohol (1:1.8).
ACTION AND USES: Substitute for lemon juice; also substitute for dilute hydrochloric acid in the treatment of gastric hypoacidity.
DOSAGE: 0.5 Gm. or 8 grains (U.S.P.), in solution.
_Syrupus Acidi Citrici (Syr. Acid. Cit.), Syrup of Citric Acid, U.S.P._--Citric acid (1%), flavored with tincture of lemon peel, in syrup.
USES: Vehicle for salty substances such as bromides.
=Acidum Formicum (Acid. Formic), Formic Acid, N.F.=--HCOOH (about 25%).
A clear, colorless liquid, with a characteristic pungent odor, and an acid reaction.
ACTION AND USES: Externally as caustic irritant, but without advantage over mustard. Internally as slightly irritant diuretic, but without advantage over nitrates. The elixirs containing various formates are intended as tonics, but there is no good evidence that they have such action. They are needlessly complex and irrational.
_Elixir Formatum (Elix. Format.), Elixir of Formates, N.F._--Potassium formate (5%), sodium formate (5%) and aromatic elixir. Absolute alcohol content about 15 per cent.
_Elixir Formatum Compositum (Elix. Format. Co.), Compound Elixir of Formates, N.F._--Sodium formate (3%), magnesium formate (2.5%), strontium formate (2.5%), lithium formate (1%), quinine formate (0.8%), compound spirit of cardamom, acetic ether, alcohol, glycerin and distilled water. Absolute alcohol content about 9.9 per cent.
_Spiritus Acidi Formici (Sp. Ac. Formic.), Spirit of Formic Acid, N.F._ (Spiritus Formicarum, Spirit of Ants).--Formic acid (4%) in distilled water and alcohol. Absolute alcohol content about 70 per cent.
=Acidum Gallicum (Acid. Gallic.), Gallic Acid, U.S.P.=
An odorless, almost white powder, with an astringent taste. Soluble in water (1:87) and freely soluble in alcohol (1:4.6) and in glycerin (1:10).