Crossword clues for ammonium
The Collaborative International Dictionary
Ammonium \Am*mo"ni*um\, n. [See Ammonia.] (Chem.) A compound radical, NH4, having the chemical relations of a strongly basic element like the alkali metals.
Wiktionary
n. (context inorganic chemistry English) The univalent NH4+ cation, derived by the protonation of ammonia.
WordNet
n. the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion [syn: ammonium ion]
Wikipedia
The ammonium cation is a positively charged polyatomic ion with the chemical formula . It is formed by the protonation of ammonia (NH). Ammonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations , where one or more hydrogen atoms are replaced by organic groups (indicated by R).
Usage examples of "ammonium".
The precipitation of lead from acid solutions with sulphuric acid, and the solubility of the precipitate in ammonium acetate, distinguishes it from all other metals.
If the volumetric method is to be used, the lead sulphate should be dissolved out with a solution of sodium acetate instead of with the ammonium salt solution.
How to make chloride of azode A good example of how ammonium nitrate can be chemically mixed with other substances, and impart its explosive qualities to these otherwise nonexplosive materials, is in the preparation of chloride of azode.
Preliminary Treatment of the Fabric -- Waterproofing with Acetate of Alumina -- Impregnation of the Fabric -- Drying -- Waterproofing with Paraffin -- Waterproofing with Ammonium Cuprate -- Waterproofing with Metallic Oxides -- Coloured Waterproof Fabrics -- Waterproofing with Gelatine, Tannin, Caseinate of Lime and other Bodies -- Manufacture of Tarpaulin -- British Waterproofing Patents -- Index.
Soluble ferrocyanides, ferricyanides, and sulphocyanides of various metals, by forming dibasic salts with potassium, sodium, or ammonium, in conjunction with vegetable, animal, or metallic coloring matters.
This consists of a margarate or stearate of ammonium with lime, oxide of iron, potash, certain fatty acids, and a yellowish odorous matter.
The compounding was easy, a four-to-one mixture of ammonium nitrate and TNT produces a good facsimile of Amatol, the best military-industrial explosive for large-scale demolition work.
That makes for a similar cargo mix, just about what I described, often along with some ammonium nitrate or benzol thrown in.
Next put in the solution of ammonium molybdate solution in the proportion of about 50 c.
For example, Iraq built a facility for the production of ammonium perchlorate, a key ingredient in solid missile propellant, indicating that work continues on advanced solid-fuel multistage missiles.
The dynamite, the detective said, there were impurities, a residue of ammonium oxalate and potassium perchloride that might mean the bomb was homemade, and the dead bolt on the front door was shattered.
Ammonium nitrate has not only been used in dynamite, but also in many other different explosive compounds, including NG picric acid, and coal dust.
But most of them are built around one or more of half a dozen or so basic compounds - ammonium nitrate, picric acid, nitroglycerin, PETN, RDX, TNT.
The precipitated sulphides, after digesting with soda and washing, are dissolved in nitric acid and the solution boiled with ammonium carbonate.
When the nature of the impurities will allow it, this process may be shortened to first filtering off the gangue, then precipitating with sulphuretted hydrogen and washing the precipitate on the filter first with water and then with ammonium sulphide.