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The peroxydisulfate ion, S2O82−, is a oxyanion. It is commonly referred to as the persulfate ion, but this term also refers to the peroxomonosulfate ion, SO52−. Approximately 500,000 tons of salts containing this anion are produced annually. Important salts include sodium persulfate (Na2S2O8), potassium persulfate (K2S2O8), and ammonium persulfate ((NH4)2S2O8). These salts are colourless, water-soluble solids that are strong oxidants. ==Applications== Salts of peroxydisulfate are mainly used to initiate the polymerization of various alkenes, including styrene, acryonitrile, and fluoroalkenes. Polymerization is initiated by the homolysis of the peroxydisulfate: :: ()2− 2 ()•− In addition to its major commercial applications, peroxydisulfate participates in reactions of interest in the laboratory: * Elbs persulfate oxidation * Oxidation of Ag+ to Ag2+ 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「peroxydisulfate」の詳細全文を読む スポンサード リンク
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