A colorless, odorless, syrupy liquid having a strongly acid taste. Miscible with water. Incompatible with alkalies, alkali carbonates, ferric chloride, lead acetate and solutions of lime.
ACTION AND USES: Similar to those of hydrochloric acid. Has none of the therapeutic properties of free phosphorus.
_Acidum Phosphoricum Dilutum (Acid. Phos. Dil.), Diluted Phosphoric Acid, U.S.P._--H{ 3}PO{ 4} (about 10%).
DOSAGE: 2 Cc. or 30 minims (U.S.P.), diluted.
_Liquor Phosphatum Acidus (Liq. Phos. Acid.), Acid Solution of Phosphates, N.F._ (Solution of Acid Phosphates).--Made by dissolving precipitated calcium carbonate (5%) in phosphoric acid and water.
_Liquor Phosphatum Compositus (Liq. Phos. Co.), Compound Solution of Phosphates, N.F._--Phosphates of calcium, iron, ammonium, potassium and sodium in citric acid, glycerin, orange flower water and water.
_Syrupus Phosphatum Compositum (Syr. Phos. Co.), Compound Syrup of the Phosphates, N.F._ (Chemical Food).--Compound solution of phosphates (50%), colored with tincture of cudbear, in glycerin and syrup.
_Syrupus Phosphatum cum Quinina et Strychnina._--See under =Quininae Hydrochloridum=.
=Acidum Picricum, Picric Acid.=--See =Trinitrophenol=.
=*Acidum Salicylicum (Acid. Salicyl.), Salicylic Acid, U.S.P.=--C{ 6}H{ 4}(OH)COOH.
A white, odorless powder, tasting first sweetish, subsequently acrid. Slightly soluble in water (1:460), freely soluble in alcohol (1:2.7) and in ether. Incompatible with solutions of iron and with spirit of nitrous ether.
ACTION AND USES: Antirheumatic, antiseptic, germicide and keratolytic.
DOSAGE: Internally 0.75 Gm. or 12 grains (U.S.P.) best given in the form of soluble salicylates (see =Sodii Salicylas=). Externally in 10 per cent. ointment as a keratolytic.
_Collodium Salicylici Compositum (Collod. Salicyl. Co.), Compound Salicylic Collodion, N.F._--Salicylic acid (1.1%) and flexible collodion colored with fluidextract of cannabis.
USES: A popular application for softening corns. The cannabis can play no rôle beyond that of coloring agent.
_Glycerogelatinum Acidi Salicylici (Glycerogel. Acid. Salicyl.), Salicylic Acid Glycerogelatin, N.F._--Salicylic acid (10%), in water, glycerin and glycerinated gelatin.
_Mulla Acidi Salicylici (Mull. Ac. Salicyl.), Salicylic Acid Mull, N.F._ (Unguentum Salicylatum Extensum, N.F. III).--Salicylic acid (10%), in benzoinated suet and benzoinated lard.