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Home › Miscellaneous Chemicals › Iodide of Ammonium
Iodide of Ammonium
Place with 1/2 pint muriatic acid diluted with 1 quart a portion of iodine in a flask with a little wa- distilled water; evaporate to a pellicle or ter; add to it a solution of hydrosulphuret of crust (see No. 9), and set aside to crystallize. ammonia, until the mixture loses its red 4235. Protoxide of Barium. This is color, and is turbid from the separation of the oxide of barium or baryta. (See No. sulphur; by shaking the flask, the most of 3985.) the sulphur will form into a mass. Pour off 4236. Peroxide of Barium. The perthe liquid, and boil it until all odor of sul- oxide or binoxide is prepared from pure baryta, phuretted hydrogen and of ammonia is lost.
Then filter it, and evaporate it, constantly stirring, over a flame, until it becomes pasty, and then in a water-bath until it forms a dry salt. (U. S. Dis.) heated to a full red heat in a porcelain tube, and exposed to a stream of pure dry oxygen gas.
Instead of baryta, its nitrate may be used, but the nitrous fumes must be allowed to pass off entirely before applying the oxygen.