(Diammonium hydrogen phosphate) may be formed by evaporatting a solution of phosphoric acid.
(Ammonia gas) may be passed into an aqueous solution of a sesquicarbonate.
(Ammonium fluoride) may be obtained by neutralizing ammonia.
(Ammonia gas) may have power of combinning with some substances.
Quantities of ammonia may be obtained from a liquor of gas-works.