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See also:ANTOINE See also:JEROME See also:BALARD (1802-1876) , See also:French chemist, was See also:born at See also:Montpellier on the 3oth of See also:September 1802 . He started as an See also:apothecary, but taking up teaching he acted as chemical assistant at the See also:faculty of sciences of his native See also:town, and then became See also:professor of See also:chemistry at the royal See also:college and school of See also:pharmacy and at the faculty of sciences . In 1826 he discovered in See also:sea-See also:water a substance which he recognized as a previously unknown See also:element and named See also:bromine . The reputation brought him by this achievement secured his See also:election as successor to L . J . See also:Thenard in the See also:chair of chemistry at the faculty of sciences in See also:Paris, and in 1851 he was appointed professor of chemistry at the College de See also:France, where he had M . P . E . See also:Berthelot first as See also:pupil, then as assistant and finally as colleague . He died in Paris on the 3oth of See also:April 1876 . While the See also:discovery of bromine and the preparation of many of its compounds was his most conspicuous piece of See also:work, See also:Balard was an industrious chemist on both the pure and applied sides . In his researches on the See also:bleaching compounds of See also:chlorine he was the first to advance the view that bleaching-See also:powder is a See also:double See also:compound of calcium239 chloride and hypochlorite; and he devoted much See also:time to the problem of economically obtaining soda and potash from sea-water, though here his efforts were nullified by. the discovery of the much richer See also:sources of See also:supply afforded by the See also:Stassfurt deposits . In organic chemistry he published papers on the decomposition of ammonium oxalate, with formation of oxamic See also:acid, on amyl See also:alcohol, on the cyanides, and on the difference in constitution between nitric and sulphuric See also:ether . |
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