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|Section2= |Section3= |Section5= |Section6= |Section7= |Section8= }} Iron(II) sulfate (British English: iron(II) sulphate) or ferrous sulfate is a salt with the formula FeSO4. It is used medically to treat iron deficiency, and also for industrial applications. Known since ancient times as copperas and as green vitriol, the blue-green heptahydrate is the most common form of this material. All iron sulfates dissolve in water to give the same aquo complex ()2+, which has octahedral molecular geometry and is paramagnetic. ==Hydrates== Iron(II) sulfate can be found in various states of hydration, and several of these forms exist in nature. * FeSO4·H2O (mineral: Szomolnokite, relatively rare) * FeSO4·4H2O (mineral: Rozenite,〔(【引用サイトリンク】url = http://www.webmineral.com/data/Rozenite.shtml )〕 white, relatively common, may be dehydratation product of melanterite) * FeSO4·5H2O (mineral: Siderotil,〔(【引用サイトリンク】url = http://www.webmineral.com/data/Siderotil.shtml )〕 relatively rare) * FeSO4·6H2O (mineral: Ferrohexahydrite,〔(【引用サイトリンク】url = http://www.webmineral.com/data/Ferrohexahydrite.shtml )〕 relatively rare) * FeSO4·7H2O (mineral: Melanterite,〔(【引用サイトリンク】url = http://www.webmineral.com/data/Melanterite.shtml )〕 blue-green, relatively common) The heptahydrate in solution (water as solvent) transforms to both heptahydrate and tetrahydrate when the temperature reaches . Then at they form both tetrahydrate and monohydrate. All mentioned mineral forms are connected with oxidation zones of Fe-bearing ore beds (pyrite, marcasite, chalcopyrite, etc.) and related environments (like coal fire sites). Many undergo rapid dehydration and sometimes oxidation. 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「Iron(II) sulfate」の詳細全文を読む スポンサード リンク
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