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sodium chlorate : ウィキペディア英語版
sodium chlorate

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Sodium chlorate is an inorganic compound with the chemical formula NaClO3. It is a white crystalline powder that is readily soluble in water. It is hygroscopic. It decomposes above 300 °C to release oxygen and leave sodium chloride. Several hundred million tons are produced annually, mainly for applications in bleaching paper.〔
==Synthesis==
Industrially, sodium chlorate is produced by the electrolysis of a hot sodium chloride solution:〔Helmut Vogt, Jan Balej, John E. Bennett, Peter Wintzer, Saeed Akbar Sheikh, Patrizio Gallone “Chlorine Oxides and Chlorine Oxygen Acids” in Ullmann's Encyclopedia of Industrial Chemistry 2002, Wiley-VCH. 〕
:NaCl + 3 H2O → NaClO3 + 3 H2:
This reaction progresses in heat (at least 70 degrees Celsius), and controlled pH. In lower temperature or with high pH another reaction progresses:
2 NaCl + H2O → NaClO + NaCl + H2
The Chloralkali process is an industrial process for the electrolytic production of sodium hydroxide and chlorine.
It can also be synthesized by passing chlorine gas through a solution of sodium hydroxide. It is then purified by crystallization.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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