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|Section2= |Section3= }} Ferroin is the chemical compound with the formula ()SO4, where ''o''-phen is an abbreviation for 1,10-phenanthroline, a bidentate ligand. The term "ferroin" is used loosely and includes salts of other anions such as chloride. ==Redox indicator== This coordination compound is used as an indicator in analytical chemistry.〔D. C. Harris "Quantitative Chemical Analysis" 4th edition, W. H. Freeman, NY. ISBN 0-7167-2508-8.〕 The active ingredient is the ()2+ ion, which is a chromophore that can be oxidized to the ferric derivative ()3+. The potential for this redox change is +1.06 volts in 1M H2SO4. It is a popular redox indicator for making oscillatory Belousov–Zhabotinsky reactions visible. 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「ferroin」の詳細全文を読む スポンサード リンク
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