Prep. Carbonate of soda, one pound; slaked lime, twelve ounces; distilled water, a gallon. Prepared in the same manner as directed for the solution of potash. The changes which take place in this process are exactly the same as those which occur in forming liquor potassae.

Prop. & Comp. Liquor sodas is a colourless liquid, with intensely caustic taste; sp. gr. 1.047. [1.071. U. S.] One fluid ounce requires for neutralization 47 measures of the volumetric solution of oxalic acid, equivalent to 14.57 grains of alkali. In most of its characters it resembles liquor potassae, except that it is not precipitated by bichloride of platinum, or tartaric acid, and is precipitated by a solution of antimoniate of potash, the antimoniate of soda being a very insoluble salt. When heated with an excess of dilute nitric acid and evaporated to dryness, the residue forms with water a clear solution, which is rendered turbid by chloride of barium and by nitrate of silver, but not by ammonia, indicating traces of sulphates and chlorides, and the absence of metallic impurities (iron, &c).

Therapeutics & Use. The action upon the system would probably be almost the same as that of liquor of potassae. It is employed in the preparation of sulphurated antimony, and in other processes.

Dose. 10 min. to 1 fl. drm., freely diluted.