White powder which absorbs moisture readily. Freely soluble in water (1:8.1), but insoluble in alcohol.

Dosage: 2 Gm. or 30 grains (U.S.P.).

Liquor Sodii Phosphatis Compositus (Liq. Sod. Phos. Co.), Compound Solution of Sodium Phosphate, N.F.—Sodium phosphate (100%) and citric acid in glycerin and water.

Uses: Laxative.

Dosage: 8 Cc. or 2 fluidrachms (N.F.).

*Sodii Phosphas Effervescens (Sod. Phos. Eff.), Effervescent Sodium Phosphate, U.S.P.—Exsiccated sodium phosphate (20%) in a mixture of sodium bicarbonate (47.7%), tartaric acid (25.2%) and citric acid, the last three yielding sodium citrate and sodium tartrate.

Dosage: 10 Gm. or 2-1/2 drachms (U.S.P.).

*Sodii Salicylas (Sod. Salicyl.), Sodium Salicylate, U.S.P.—C6H4(OH) (COONa).

White or nearly white, odorless or nearly odorless powder having a sweet, saline taste. Very soluble in water (1:0.9) and freely soluble in alcohol (1:9.2). Incompatible with acids, with acid salts and with solutions of many of the alkaloids, particularly quinine, which precipitates as the salicylate.

Action and Uses: The salt usually employed to secure the constitutional action of salicylic acid.