Epitome of the Pharmacopeia of the United States and the National Formulary Part 77

DOSAGE: Curative, 10,000 units (U.S.P.); protective, 1,500 units (U.S.P.); both hypodermic.

=Sevum Praeparatum (Sev. Praep.), Prepared Suet, U.S.P.= (Mutton Suet).

A white, solid, almost odorless fat, having a bland taste when fresh, but becoming rancid on prolonged exposure to air.

ACTION AND USES: Used in the preparation of ointments and cerates.

_Sevum Benzoinatum (Sev. Benz.), Benzoinated Suet, N.F._--Benzoin (3%) in prepared suet.

USES: Ointment base; superfluous.

=Sinapis Alba (Sinap. Alb.), White Mustard, U.S.P.= (Yellow Mustard).--Ripe seeds.

ACTION AND USES: Develops irritant volatile oil on contact with water; frequently mixed with black mustard in powder for use as ground mustard.

DOSAGE: Emetic, 10 Gm. or 2-1/2 drachms (U.S.P.).

=*Sinapis Nigra (Sinap. Nig.), Black Mustard, U.S.P.= (Brown Mustard).--Ripe seeds.

ACTION AND USES: See =Oleum Sinapis Volatile=.

DOSAGE: Emetic, 10 Gm. or 2-1/2 drachms (U.S.P.).

_*Emplastrum Sinapis (Emp. Sinap.), Mustard Plaster, U.S.P._ (Charta Sinapis, U.S.P. VIII, Mustard Paper).--A mixture of black mustard, deprived of its fixed oil, and a solution of rubber, spread on paper, cotton cloth or other fabric.

USES: Counterirritant.

=Soda Chlorinata, Chlorinated Soda.=

ACTION AND USES: Hypochlorites in acid, alkaline and neutral solutions have been found useful in the treatment of infected wounds. The alkaline solution is represented by the Liquor Sodae Chlorinatae below, and by the Liquor Pota.s.sae Chlorinatae, which see under Pota.s.sa Chlorinata.

_*Liquor Sodae Chlorinatae (Liq. Sod. Chlorinat.), Solution of Chlorinated Soda, U.S.P._ (Labarraque's Solution).--Chlorine compounds of sodium containing not less than 2.5 per cent. available Cl.

=Soda c.u.m Calce (Sod. c. Calc.), Soda with Lime, N.F.= (London Paste).--Sodium hydroxide and calcium oxide (each 50%).

ACTION AND USES: Caustic.

=Sodii Acetas (Sod. Acet.), Sodium Acetate, U.S.P.=--NaC{2}H{3}O{2} + 3H{2}O.

Colorless crystals or granular powder, odorless or nearly odorless, and having a cooling, saline taste. Very soluble in water (1:0.8) and soluble in alcohol (1:19).

ACTION AND USES: Practically identical with those of Pota.s.sii Acetas, which see.

DOSAGE: 1 Gm. or 15 grains (U.S.P.).

=Sodii a.r.s.enas (Sod. a.r.s.en.), Sodium a.r.s.enate, U.S.P.= (a.r.s.enas Sodii, P.I.).--Na{2}HAsO{4} + 7H{2}O.

Colorless, odorless crystals, efflorescent in dry air, and somewhat deliquescent in moist air. Freely soluble in water (1:1.5) and slightly soluble in alcohol.

ACTION AND USES: Has the same general action and uses as a.r.s.enic trioxide, but is less active.

DOSAGE: 0.005 Gm. or 1/12 grain (U.S.P.). Usually given in the form of solution or pill.

_Sodii a.r.s.enas Exsiccatus (Sod. a.r.s.en. Exsic.), Exsiccated Sodium a.r.s.enate, U.S.P._--Na{2}HAsO{4}.

White, odorless, amorphous powder. Freely soluble in water (1:3.1), but only slightly soluble in alcohol.

DOSAGE: 0.003 Gm. or 1/20 grain (U.S.P.).

_Liquor Sodii a.r.s.enatis (Liq. Sod. a.r.s.en.), Solution of Sodium a.r.s.enate, U.S.P._--Exsiccated sodium a.r.s.enate (about 1%) in water.

USES: No advantage over other a.r.s.enicals.

DOSAGE: 0.2 Cc. or 3 minims (U.S.P.).

_Liquor Sodii a.r.s.enatis, Pearson (Liq. Sod. a.r.s.en. Pearson), Pearson's Solution of Sodium a.r.s.enate, N.F._ (Liquor a.r.s.enicalis Pearsonii).--Exsiccated sodium a.r.s.enate (0.1%) in water. Should not be confounded with Liquor Sodii a.r.s.enatis, U.S.P., which is ten times stronger.

USES: Superfluous a.r.s.enic preparation.

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

=*Sodii Benzoas (Sod. Benz.), Sodium Benzoate, U.S.P.=--Na(C{6}H{5}.COO).

White, odorless, sweetish powder. Freely soluble in water (1:1.8), and soluble in alcohol (1:61). Incompatible with mineral acids and ferric salts.

ACTION AND USES: Has the action of benzoic acid, but is less irritating. Mild antiseptic, practically non-toxic.

DOSAGE: 1 Gm. or 15 grains (U.S.P.).

=Sodii Benzosulphinidum (Sod. Benzosulphin.), Sodium Benzosulphinide, U.S.P.= (Sodium-Saccharin, Soluble Saccharin).

Colorless crystals or white powder, odorless or nearly odorless, and having an intensely sweet taste. Freely soluble in water (1:1.2) and soluble in alcohol (1:50).

ACTION AND USES: Those of benzosulphinide (saccharin), but with the advantage of ready solubility.

DOSAGE: 0.2 Gm. or 3 grains (U.S.P.).

=*Sodii Bicarbonas (Sod. Bicarb.), Sodium Bicarbonate, U.S.P.= (Baking Soda).--NaHCO{3}.