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Topic: Ammonia

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  ATSDR - ToxFAQs™: Ammonia
Ammonia is found throughout the environment in the air, soil, and water, and in plants and animals including humans.
Ammonia is applied directly into soil on farm fields, and is used to make fertilizers for farm crops, lawns, and plants.
Ammonia is found throughout the environment in air, water, soil, animals, and plants.
www.atsdr.cdc.gov /tfacts126.html   (917 words)

  Ammonia - MSN Encarta
Ammonia was known to the ancients, who derived both the name and the substance from sal ammoniac, which was produced at the Temple of Jupiter Ammon in Libya by the distillation of camel dung.
Ammonia is an important refrigerant (see Refrigeration) and is widely used in the chemical industries, especially in the manufacture of fertilizer, nitric acid, and explosives.
Ammonia melts at -77.7° C (-107.9° F), boils at -33.35° C (-28.03° F), and has a density of 0.68 at its boiling point and 1 atmosphere (1,013 millibars) of pressure.
encarta.msn.com /encyclopedia_761551875/Ammonia.html   (278 words)

  Ammonia - Wikipedia, the free encyclopedia
Ammonia is found in small quantities in the atmosphere, being produced from the putrefaction of nitrogenous animal and vegetable matter.
Ammonia is converted to carbamoyl phosphate by the enzyme carbamoyl phosphate synthase, and then enters the urea cycle to be either incorporated into amino acids or excreted in the urine.
Ammonia reacts violently with the halogens, and causes the explosive polymerization of ethylene oxide.
en.wikipedia.org /wiki/Ammonia   (3995 words)

 ATSDR - MMG: Ammonia
Ammonia causes rapid onset of a burning sensation in the eyes, nose, and throat, accompanied by lacrimation, rhinorrhea, and coughing.
Ammonia is a caustic and corrosive chemical that causes irritation and chemical burns upon contact of the gas or liquid with the eyes, skin, respiratory tract, or alimentary canal.
Ammonia poisoning is not known to pose additional risk during the use of bronchial or cardiac sensitizing agents.
www.atsdr.cdc.gov /MHMI/mmg126.html   (4706 words)

 Ammonia Spills in New York State 1993-1998 Hazardous Substances Emergency Events Surveillance Project
Ammonia is a corrosive, colorless toxic gas with a sharp odor.
Therefore, when anhydrous ammonia is released to the air, it may rise and disperse as a gas or it may be heavy and travel along the ground as an aerosol or because it has trapped water vapor.
Similar numbers of ammonia releases (Table 6) took place in the categories of chemical/metal/equipment manufacturing (29) and food/beverage processing (31), but the number of injuries was much lower in the manufacturing sector (1) than in the food/beverage processing industry (31).
www.health.state.ny.us /environmental/chemicals/hsees/ammonia.htm   (3308 words)

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utenti.lycos.it /homethenv3/index-ammonia.html   (1690 words)

 ammonia-based life
In the ammonia solvent system, acids and bases are different than in the water system (acidity and basicity are defined relative to the medium in which they are dissolved).
These center principally upon the fact that the heat of vaporization of ammonia is only half that of water and its surface tension only one third as much.
Consequently, the hydrogen bonds that exist between ammonia molecule are much weaker than those in water so that ammonia would be less able to concentrate non-polar molecules through a hydrophobic effect.
www.daviddarling.info /encyclopedia/A/ammonialife.html   (852 words)

 HPA | Ammonia | FAQs
Ammonia is a colourless, irritant, reactive gas that is lighter than air (approximately half as heavy).
Ammonia is mainly released into the environment from the natural breakdown of organic matter and elevated levels can be generated by intensive farming practices.
Ammonia is produced from the natural breakdown of organic matter and so exposure to ammonia will occur at very low levels throughout the environment.
www.hpa.org.uk /chemicals/compendium/Ammonia/FAQs.htm   (448 words)

 ammonia. The Columbia Encyclopedia, Sixth Edition. 2001-05
Ammonia reacts with strong acids to form stable ammonium salts: with hydrogen chloride it forms ammonium chloride; with nitric acid, ammonium nitrate; and with sulfuric acid, ammonium sulfate.
The ammonia sold for household use is a dilute water solution of ammonia in which ammonium hydroxide is the active cleansing agent.
Ammonia is also used in large amounts in the Ostwald process (see Ostwald, Wilhelm) for the synthesis of nitric acid; in the Solvay process for the synthesis of sodium carbonate; in the synthesis of numerous organic compounds used as dyes, drugs, and in plastics; and in various metallurgical processes.
www.bartleby.com /65/am/ammonia.html   (755 words)

 ASME Ammonia Tanks
Ammonia is used in many different application witch requires appropriate storage.
Anhydrous ammonia used on farms as a fertilizer.
Ammonia relatively cheap and does not harm the ozone layer.
ammoniatanks.com   (247 words)

 NIOSH Topic: Ammonia | CDC/NIOSH
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NIOSH Criteria Documents: Criteria for a Recommended Standard: Occupational Exposure to Ammonia
Contains a standard for mitigation of exposure to ammonia to prevent adverse effects over a working lifetime.
www.cdc.gov /niosh/topics/ammonia   (212 words)

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