Of the seven official salts of Ammonium two only have the characteristic ion action. These are the Carbonate and Chloride.

Ammonium Carbonate is a varying mixture of acid ammonium carbonate and ammonium carbamate. It is prepared by subliming a mixture of calcium carbonate and ammonium sulphate.

Properties:

Appearance............................................................................................

Solubility:

Color ....................................................................

H2O .............................................................................

Odor ........................................................................

C2H5OH ...............................................................................

Taste ...............................................................

Effect of hot H2O .......................................................

Effect of exposure to air ....................................

Incompatibilities: To Ammonium Carbonate T. S. add Any acid solution .............................................................................. Any iron solution ..............................................................................

The chief utility of Ammonium Carbonate is to irritate the terminals of the trigeminus when the ammonia gas therefrom is inhaled.

The Carbonate is used in preparing Spiritus Ammonii Aromaticus.

Ammonium Chloride is a purified product of the crude chloride resulting from treating gas liquor with hydrochloric acid.

Properties:

Appearance ..........................................................

Solubility:

Color ...................................................................

H2O .........................................................................

Odor ................................................................

C2H5OH ....................................................................

Taste ...............................................................

Effect of exposure to moist air.............................................

Incompatibilities: To Ammonium Chloride, T. S., add

AgNO3, T. S........................................................................................

Na2CO3, T. S.....................................................................................

NaOH, T. S...........................................................................................

An acid.........................................................................................................

Ammonium Chloride seems to have a beneficial effect on the type of sub-acute gastritis due to passive hepatic congestion.

Average dose, 0.3 Gm. Administered in the nascent vapor state, it is used for bronchitis.

An official preparation is Trochisci Ammonii Chloridi.

Official Preparations.

Ammonium Benzoate; dose, 1 Gm. Ammonium Bromide; dose, 1 Gm. Ammonium Iodide; dose, 0.3 Gm. Ammonium Salicylate; dose, 1 Gm. Ammonium Valerate; dose, 0.5 Gm.

The Bromide, Iodide, and Salicylate are generally considered inferior to the corresponding salts of sodium. The Benzoate is little used, while the Valerate is practically inert.