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A compound radical, NH4, having the chemical relations of a strongly basic element like the alkali metals.

A radical regarded as derived from ammonium by the substitution of mercury for a portion of the hydrogen.

A hypothetical radical derived from ammonium by the substitution of metallic atoms in place of hydrogen.

Pertaining to, derived from, or containing, rhodium and ammonia; -- said of certain complex compounds.

The salt of wisdom of the alchemists, a double salt composed of the chlorides of ammonium and mercury. It was formerly used as a stimulant. Brande & C.

An explosive consisting of a mixture of powdered aluminium and nitrate of ammonium.

ve force. -- Sal ammoniac Etym: [L. sal ammoniacus], the salt usually called chloride of ammonium, and formerly muriate of ammonia.

fermentation process by which ammonia is formed, as that by which urea is converted into ammonium carbonate when urine is exposed to the air.

An explosive consisting of ammonium nitrate, a derivative of nitrobenzene, chlorated napthalene, and wood meal.

em.), an amido acid, NH2.CO2H, not existing in the free state, but occurring as a salt of ammonium in commercial ammonium carbonate; -- called also amido formic acid.

lorine with another element or radical; as, chloride of sodium (common salt). Chloride of ammonium, sal ammoniac. -- Chloride of lime, bleaching powder; a grayish white substance, CaOClcalcium hypochlorite. See Hypochlorous acid, under Hypochlorous. -- Mercuric chloride, corrosive sublimate.

A substance, as salt, ammonium chloride, etc., which crystallizes with water of crystallization only at low temperatures, or below the freezing point of water. F. Guthrie.

A salt of cyanic acid. Ammonium cyanate (Chem.), a remarkable white crystalline substance, NH4.O.CN, which passes, on standing, to the organic compound, urea, CO.(NH)2.

ch- blossom odor, so called from its tendency to form blue compounds; obtained by heating ammonium oxalate, mercuric cyanide, etc. It is obtained in combination, forming an alkaline cyanide when nitrogen or a nitrogenous compound is strongly ignited with carbon and soda or potash. It conducts itself like a member of th…

r volatile substances; as, the dissociation of the sulphur molecules; the dissociation of ammonium chloride into hydrochloric acid and ammonia.

ommon alum, which consists of the sulphate of aluminium, and the sulphate of potassium or ammonium. -- Double shuffle, a low, noisy dance. -- Double standard (Polit. Econ.), a double standard of monetary values; i. e., a gold standard and a silver standard, both of which are made legal tender. -- Double star (Astron…

ganic, imide acid, obtained as a colorless crystalline substance, C12H4N2O8 by heating an ammonium salt of mellitic acid. By reduction it is changed to a dark blue substance (euchrone), -- hence its name.

Any of several explosive mixtures, chiefly of ammonium nitrate and a nitrate derivative of naphthalene. They are stable, but require protection from moisture. As prepared it is a compressed cylinder of the explosive, filled with loose powder of the same composition, all inclosed in waterproof wrappers. It is used for m…

a brilliant reddish yellow crystalline compound, Co2Cl6(NH3)12, obtained by the action of ammonium chloride on an ammoniacal solution of cobaltic chloride.

hem.), a white crystalline substance obtained by mixing solutions of sodium phosphate and ammonium phosphate, and also called hydric-sodic- ammonic-phosphate. It is a powerful flux, and is used as a substitute for borax as a blowpipe reagent in testing for the metallic oxides. Originally obtained by the alchemists from…