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Ammonium   /əmˈoʊniəm/   Listen

The ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion.  Synonym: ammonium ion.

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"Ammonium" Quotes from Famous Books

... Weldon tried to adapt the former to the production of chlorine or hydrochloric acid. His method consisted in using magnesia instead of lime for the recovery of the ammonia (which occurs in the form of ammonium chloride in the ammonia-soda process), and then by evaporating the magnesium chloride solution and heating the residue in steam, to condense the acid vapours and so obtain hydrochloric acid. One day before him E. Solvay had patented the same process, but neither of ...
— Encyclopaedia Britannica, 11th Edition, Volume 6, Slice 3 - "Chitral" to "Cincinnati" • Various

... are very fat and have lain in water or moist soil for from one to three years this process takes place, the fat uniting with the ammonia given off by the decomposition to form adipocere. This consists of a margarate or stearate of ammonium with lime, oxide of iron, potash, certain fatty acids, and a yellowish odorous matter. It has a fatty, unctuous feel, is either pure white or pale yellow, with an odour of decayed cheese. Small portions of the body may show signs of this change in ...
— Aids to Forensic Medicine and Toxicology • W. G. Aitchison Robertson

... several forms of Iodide of Potassium, Iodide of Ammonium, Iodide of Iron, and Iodide of Lime, is largely employed by physicians, and often with most happy results. But for domestic use we cannot advise its employment, as it is liable to injure the invalid, when ...
— The People's Common Sense Medical Adviser in Plain English • R. V. Pierce

... light, white voluminous dust which causes a haze, more or less opaque, in the apartment. [Footnote: Lewes suggests that ammonia in the gas burnt may assist in the production of this haze, owing to the formation of solid ammonium salts in the state of line dust.] Immediately it comes in contact with atmospheric moisture phosphoric anhydride is converted into phosphoric acid, but this also occurs at first as a solid substance. The solidity and visibility of the phosphoric anhydride and acid are beneficial ...
— Acetylene, The Principles Of Its Generation And Use • F. H. Leeds and W. J. Atkinson Butterfield

... positive radical is NH4, ammonium, as in NH4Cl. It always deports itself as a metal. The commonest radical is the negative OH, called hydroxyl, from hydrogen- oxygen. Take away H from the symbol of water, H-O-H, and hydroxyl —(OH) with one free bond is left. If an element takes the place ...
— An Introduction to Chemical Science • R.P. Williams

Words linked to "Ammonium" :   ammonify, ammonia

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