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Iron Sulfates

sulfates of divalent and trivalent iron, FeSO₄ and Fe₂(SO₄)₃.

The sulfate of divalent iron separates from aqueous solutions at 1.82°–56.8°C as pale green crystals of FeSO₄.7H₂O, known in industry as green vitriol. The solubility of anhydrous FeSO₄ in 100 g of water is as follows: 26.6 g at 20°C and 54.4 g at 56°C. Green vitriol can be made by treating scrap iron or cuttings of roofing iron with dilute sulfuric acid. In industry it is a by-product of the pickling of iron sheets, wire, or other articles with dilute H₂SO₄ to remove scale. It is used in making ink, in dyeing (to dye wool black), and to preserve wood.

Ferric sulfate forms crystalline hydrates containing various amounts of water—for example, Fe₂(SO₄)₃.9H₂O (yellow). It is readily soluble in water. It forms iron alums with sulfates of alkali metals and (NH₄)₂SO₄. It is made industrially by dissolving ferric oxide in 75–80 percent sulfuric acid. It is used in water purification as a coagulant and for making iron alum.

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No references found	Team members from NASA's Johnson Space Center in Houston feel initial readings suggest that iron is mostly present in an oxidized form as ferric sulfate and that some of the differences in tints at Troy observed by the panoramic camera may come from differences in the hydration states of iron sulfates. 'Stuck' Martian rover uses opportunity to learn about Red Planet's ... by Asian News International	iron nitrate Iron Nitrates iron nonacarbonyl Iron Ochers iron ore Iron Ores iron oxalate iron oxide iron oxide process Iron Oxides iron pentacarbonyl iron phosphate iron pipe size Iron Plating iron pyrites iron red iron resinate iron saffron iron scurf iron sight iron soldering iron spar iron spinel iron stearate iron sulfate Iron Sulfates iron sulfide iron tetracarbonyl iron titanate iron whiskers iron winds Iron, Native Iron, Ralph iron-55 iron-59 iron-binding protein Iron-Carbon Alloys iron-Constantan iron-core choke iron-core coil iron-core transformer iron-deficiency anemia iron-dust core iron-nickel alloy iron-ore cement iron-porphyrin protein iron-retention agent iron-stony meteorite Ironarc process ironbark Ironclad	iron scurf Iron Sharpens Iron iron sickness Iron sight Iron sight Iron sights Iron sights Iron silicate Iron silicate Iron Soldering Iron Soldering Iron Soldier Iron Soldier 2 Iron Soldier 3 iron spar Iron spinel iron stearate Iron Steel Institute Japan Iron stone Iron stone Iron stone iron storage disease iron storage disease iron storage disease iron storage disease iron sucrose iron sucrose iron sucrose iron sucrose Iron sulfate Iron Sulfates Iron sulfide Iron sulfide Iron sulphate Iron Sulpher Iron Tests iron tetracarbonyl Iron tigran iron titanate iron titanate Iron Trail Convention and Visitors Bureau iron transport iron trap iron tree Iron truss Iron truss Iron truss Iron truss iron turnover iron turnover iron turnover iron turnover iron turnover Iron Vegans Raw Food Connection Iron Warriors Motorcycle Club Iron weed Iron weed iron whiskers Iron Will iron winds Iron Wolf

Team members from NASA's Johnson Space Center in Houston feel initial readings suggest that iron is mostly present in an oxidized form as ferric sulfate and that some of the differences in tints at Troy observed by the panoramic camera may come from differences in the hydration states of iron sulfates.

'Stuck' Martian rover uses opportunity to learn about Red Planet's ... by Asian News International

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