Present name. - Amnionic Benzoate. Nh47h5o2.
Prepared by dissolving Benzoic Acid in a watery solution of Ammonia, and crystallizing.
Characters and Tests. - In colourless laminar crystals, soluble in water and in alcohol. It gives a bulky yellowish precipitate with Persalts of Iron. Its aqueous solution when heated with Caustic Potash evolves Ammonia, and, if it be not too dilute, when acidulated with Hydrochloric Acid, it gives a deposit of Benzoic Acid. When heated it sublimes without any residue.
This has been recommended for gout, and to be used where Benzoic Acid is indicated. There is also a notice in Hale's New Remedies.
Preparation. - Solution in rectified spirit.