Nh4hco3, Nh4nh2co2.


Carbonate of Ammonium is a sesquicarbonate, and is obtained by subliming a mixture of chloride of ammonium and chalk. It is in the form of white, translucent masses, with a pungent ammoniacal odor, and an acrid, alkaline taste. It is soluble in water, and on exposure to the air it becomes opaque and falls into powder, losing its ammonia.

Medical Properties And Action

It is antacid, stimulant, diaphoretic and expectorant, and it is considered to be especially useful in cases where the vital powers are greatly depressed. In large doses it causes colic, convulsions and great disturbance of the nervous system, and when long continued, an annoying itching of the scalp, and skin over the surface of the body. It has a tendency to fluidify the blood. Internally, as a diffusible stimulant, it is preferred to solution of ammonia.

Therapeutic Uses

It is internally administered in diabetes, scrofula with languid circulation, asthma, pneumonia, croup, chorea, diseases of the skin, puerperal insanity, mercurial erethism, drunkenness, etc., etc.

Externally it is employed as a volatile or smelling salts, in syncope, hysteria, and asphyxia.


Of carbonate of ammonium, gr. v to gr. x, in pill or in solution with gum and sugar.

Dental Uses

It is a useful internal remedy in cancrum oris, in doses of gr. v, gradually increased to gr. x, every two or three hours, using strong nitric acid as a local application. It is also a very useful remedy in mercurial erethism, in conjunction with camphor and other stimulants; also as a stimulant in dangerous narcosis from anaesthetic agents.