LIQUOR POTASSII HYDROXIDI—SOLUTION OF POTASSIUM HYDROXIDE
A solution of potassium hydroxide (caustic potash) containing about five per cent of the hydroxide.
Derivation.—Boiling a solution of potassium carbonate with calcium hydrate leaves potassium hydrate in solution, while calcium carbonate is precipitated.
Properties.—A clean, clear colored liquid, odorless, having a very acrid and caustic taste.
Dose.—Horses and cattle, 1⁄2 to 1 oz.; sheep and pigs, 1⁄2 to 1 dr.; dogs, 5 to 10 m.
Action and Uses.—Externally potassium hydroxide and the solution of potassium hydroxide are irritant and caustic, when applied they abstract water from the parts. They dissolve fatty matters, antacids and if well diluted acts as a sedative. Internally not used to any extent, as milder salts of potassium are preferred, is antacid, alterative, febrifuge and diuretic. Large undiluted doses corrode and inflame the alimentary tract, cause colicy pains, great depression and sometimes perforations. Caustic potash is sometimes used to destroy warts and fungous growths. A dilute solution is used to cauterize poisoned wounds, but is dangerous, as it may penetrate too deeply and spread. This can be overcome by washing with vinegar.