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Platinum Fulminate
Platinum fulminate is a primary explosive which is a fulminate salt of platinum discovered by Edmund Davy Edmund Davy Fellow of the Royal Society, FRS (1785 – 5 November 1857)Christopher F. Lindsey, 'Davy, Edmund (1785–1857)’, Oxford Dictionary of National Biography, Oxford University Press, 200 accessed 6 April 2008/ref> was a professor of chemi .... It is described as a tasteless brown powder. References {{Platinum compounds Fulminates Fulminates ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fulminate
Fulminates are chemical compounds which include the fulminate ion (). The fulminate ion is a pseudohalic ion because its charge and reactivity are similar to those of the halogens. The name is derived from the Latin ''fulminātus'', meaning to explode like lightning, and reflects that fulminate salts are friction-sensitive explosives due to the instability of the ion. The best known is mercury(II) fulminate, which has been used as a primary explosive in detonators. Fulminates can be formed from metals, such as silver and mercury, dissolved in nitric acid, and reacted with ethanol. The weak single nitrogen-oxygen bond is responsible for their instability. Nitrogen very easily forms a stable triple bond to another nitrogen atom, forming nitrogen gas. Historical notes Fulminates were discovered by Edward Charles Howard in 1800. The use of fulminates for firearms was first demonstrated by a Scottish minister, Alexander John Forsyth, who patented his scent-bottle lock in 1807; th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salt (chemistry)
In chemistry, a salt or ionic compound is a chemical compound consisting of an assembly of positively charged ions ( cations) and negatively charged ions ( anions), which results in a compound with no net electric charge (electrically neutral). The constituent ions are held together by electrostatic forces termed ionic bonds. The component ions in a salt can be either inorganic, such as chloride (Cl−), or organic, such as acetate (). Each ion can be either monatomic, such as sodium (Na+) and chloride (Cl−) in sodium chloride, or polyatomic, such as ammonium () and carbonate () ions in ammonium carbonate. Salts containing basic ions hydroxide (OH−) or oxide (O2−) are classified as bases, such as sodium hydroxide and potassium oxide. Individual ions within a salt usually have multiple near neighbours, so they are not considered to be part of molecules, but instead part of a continuous three-dimensional network. Salts usually form crystalline structures ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platinum
Platinum is a chemical element; it has Symbol (chemistry), symbol Pt and atomic number 78. It is a density, dense, malleable, ductility, ductile, highly unreactive, precious metal, precious, silverish-white transition metal. Its name originates from Spanish language, Spanish , a diminutive of "silver". Platinum is a member of the platinum group of elements and group 10 element, group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the Abundance of elements in Earth's crust, rarer elements in Earth's crust, with an average abundance of approximately 5 microgram, μg/kg, making platinum about 30 times rarer than gold. It occurs in some nickel and copper ores along with some Native element mineral, native deposits, with 90% of current production from deposits across Russia's Ural Mountains, Colombia, the Sudbury Basin, Sudbury basin of Canada, and a large reserve in South Africa. Because of its scarcity in Earth's crust, only a f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edmund Davy
Edmund Davy Fellow of the Royal Society, FRS (1785 – 5 November 1857)Christopher F. Lindsey, 'Davy, Edmund (1785–1857)’, Oxford Dictionary of National Biography, Oxford University Press, 200 accessed 6 April 2008/ref> was a professor of chemistry at the Royal Cork Institution from 1813 and at the Royal Dublin Society from 1826.Leslie Stephen (Ed.). ''Dictionary of National Biography'', Smith, Elder & Co., London, 1888, Vol. XIV, p.185. He discovered acetylene, as it was later namedAmerican Council of Learned Societies. ''Dictionary of Scientific Biography'', Charles Scribner's Sons, New York, 1981, Vol. 2, p.67. by Marcellin Berthelot. He was also an original member of the Chemical Society, and a member of the Royal Irish Academy. Family and early life Edmund Davy was a cousin of Humphry Davy, the famous chemist who invented the Davy lamp for the safety of miners. Edmund, the son of William Davy, was born in Penzance, Cornwall, and lived there throughout his teen years. He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Internet Archive
The Internet Archive is an American 501(c)(3) organization, non-profit organization founded in 1996 by Brewster Kahle that runs a digital library website, archive.org. It provides free access to collections of digitized media including websites, Application software, software applications, music, audiovisual, and print materials. The Archive also advocates a Information wants to be free, free and open Internet. Its mission is committing to provide "universal access to all knowledge". The Internet Archive allows the public to upload and download digital material to its data cluster, but the bulk of its data is collected automatically by its web crawlers, which work to preserve as much of the public web as possible. Its web archiving, web archive, the Wayback Machine, contains hundreds of billions of web captures. The Archive also oversees numerous Internet Archive#Book collections, book digitization projects, collectively one of the world's largest book digitization efforts. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Platinum(II) Compounds
Platinum is a chemical element; it has symbol Pt and atomic number 78. It is a dense, malleable, ductile, highly unreactive, precious, silverish-white transition metal. Its name originates from Spanish , a diminutive of "silver". Platinum is a member of the platinum group of elements and group 10 of the periodic table of elements. It has six naturally occurring isotopes. It is one of the rarer elements in Earth's crust, with an average abundance of approximately 5 μg/kg, making platinum about 30 times rarer than gold. It occurs in some nickel and copper ores along with some native deposits, with 90% of current production from deposits across Russia's Ural Mountains, Colombia, the Sudbury basin of Canada, and a large reserve in South Africa. Because of its scarcity in Earth's crust, only a few hundred tonnes are produced annually, and given its important uses, it is highly valuable as well as a major precious metal commodity. Platinum is one of the least reactive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
