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iron(II) carbonate
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iron(II) carbonate
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- the content below is remote from Wikipedia
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{{short description|Chemical, compound of iron carbon and oxygen}}{{chembox| Verifiedfields = | Watchedfields = | verifiedrevid = | ImageFile = Iron(II) carbonate.svg| ImageSize = 150px| ImageFileL1 = | ImageSizeL1 = 100px| ImageFileR1 = | ImageSizeR1 = 120px| ImageFile2 = | ImageSize2 = 200px| Name = iron(II) carbonate| OtherNames = ferrous carbonate|Section1={{Chembox Identifiers- the content below is remote from Wikipedia
- it has been imported raw for GetWiki
??|chemspider}}| ChemSpiderID = 10774 | ??|EBI}}| ChEMBL = | correct|FDA}}| UNII = MZ3Q72U52O| InChI = 1S/CH2O3.Fe/c2-1(3)4;/h(H2,2,3,4);/q;+2/p-2| InChIKey = RAQDACVRFCEPDA-UHFFFAOYSA-L| SMILES = C(=O)([O-])[O-].[Fe+2] | ??|chemspider}}| StdInChI = | ??|chemspider}}| StdInChIKey = | CASNo = 563-71-3 | correct|CAS}}| PubChem = 11248| EINECS = | RTECS = | UNNumber =
}}|Section2={{Chembox Properties| Formula = FeCO3| MolarMass = 115.854 g/mol| Appearance = white powder or crystals| Density = 3.9 g/cm3| MeltingPtC = | MeltingPt_notes = decomposes| BoilingPtC = | BoilingPt_notes = | Solubility = 0.0067 g/L; Ksp = 1.28 Ã 10â11 | SolubleOther = | Solubility1 = | Solvent1 = | Solubility2 = | Solvent2 = | Solubility3 = | Solvent3 =
| −11}}JOHN RUMBLE >TITLE=CRC HANDBOOK OF CHEMISTRY AND PHYSICS | PUBLISHER=CRC PRESS | PAGES=5â188 | LANGUAGE=ENGLISH, | RefractIndex = | MagSus = +11,300·10â6 cm3/mol
}}|Section3={hide}Chembox Structure| Coordination = 6
| 3{edih}2/m) Space group: R {{overline | angstrom>Ã
, c = 15.3796 Ã
}}|Section4={{Chembox Thermochemistry| DeltaHf = | HeatCapacity = | DeltaGf = | Entropy =
}}Iron(II) carbonate, or ferrous carbonate, is a chemical compound with formula {{chem|Fe|C|O|3}}, that occurs naturally as the mineral siderite. At ordinary ambient temperatures, it is a green-brown ionic solid consisting of iron(II) cations {{chem|Fe|2+}} and carbonate anions {{chem|C|O|3|2-}}.}}|Section7={{Chembox Hazards| ExternalSDS = | GHSPictograms = | GHSSignalWord = | HPhrases = | PPhrases = | NFPA-H = | NFPA-F = | NFPA-R = | NFPA-S = | FlashPt = }}|Section8={{Chembox Related| OtherAnions = iron(II) sulfate| OtherCations = copper(II) carbonate, zinc carbonate }} PreparationFerrous carbonate can be prepared by reacting solution of the two ions, such as iron(II) chloride and sodium carbonate:
{{chem|Fe|Cl|2}} + {{chem|Na|2|C|O|3}} â {{chem|Fe|C|O|3}} + 2{{chem|Na|Cl}}
Ferrous carbonate can be prepared also from solutions of an iron(II) salt, such as iron(II) perchlorate, with sodium bicarbonate, releasing carbon dioxide:
{{chem|Fe}}({{chem|Cl|O|4}})2 + 2{{chem|Na|H|C|O|3}} â {{chem|Fe|C|O|3}} + 2{{chem|Na|Cl|O|4}} + {{chem|C|O|2}} + {{chem|H|2|O}}
Sel and others used this reaction (but with {{chem|Fe|Cl|2}} instead of {{chem|Fe}}({{chem|Cl|O|4}})2) at 0.2 M to prepare amorphous {{chem|Fe|C|O|3}}.Care must be taken to exclude oxygen {{chem|O|2}} from the solutions, because the {{chem|Fe|2+}} ion is easily oxidized to {{chem|Fe|3+}}, especially at pH above 6.0.Ferrous carbonate also forms directly on steel or iron surfaces exposed to solutions of carbon dioxide, forming an "iron carbonate" scale:
{{chem|Fe}} + {{chem|C|O|2}} + {{chem|H|2|O}} â {{chem|Fe|C|O|3}} + {{chem|H|2}}
PropertiesThe dependency of the solubility in water with temperature was determined by Wei Sun and others to be
log K_{mathit{sp}} = -59.3498 - 0.041377 T - 2.1963/T + 24.5724 log T + 2.518 sqrt{I} - 0.657 I,
where T is the absolute temperature in kelvins, and I is the ionic strength of the liquid.Iron carbonate decomposes at about {{Convert|500-600|C|K}}.JOURNAL, 2010-12-31, Kinetics of Thermal Decomposition of Iron Carbonate,weblink Egyptian Journal of Chemistry, 53, 6, 871â884, 10.21608/ejchem.2010.1268, 2357-0245, free, UsesFerrous carbonate has been used as an iron dietary supplement to treat anemia. It is noted to have very poor bioavailability in cats and dogs.WEB, 2013, AAFCO methods for substantiating nutritional adequacy of dog and cat foods (proposed for 2014 publication),weblink AAFCO,ToxicityFerrous carbonate is slightly toxic; the probable oral lethal dose is between 0.5 and 5 g/kg (between 35 and 350 g for a 70 kg person).Iron(III) carbonateUnlike iron(II) carbonate, iron(III) carbonate has not been isolated. Attempts to produce iron(III) carbonate by the reaction of aqueous ferric ions and carbonate ions result in the production of iron(III) oxide with the release of carbon dioxide or bicarbonate.BOOK, Ronald Rich, Inorganic Reactions in Water, 2007, Springer Berlin, Heidelberg, 9783540739616, 178, 1st,weblink en, 8 Iron through Hassium,References(1995): "Kirk-Othmer Encyclopedia of Chemical Technology". 4th ed. Volume 1.Patty, F., ed. (1963): "Industrial Hygiene and Toxicology"; volume II: 'Toxicology". 2nd ed. Interscience. Page 1053.D R. Lide, ed.(2000): "CRC Handbook of Chemistry and Physics". 81st Edition. Pages 4-65.A .Osol and J. E. Hoover and others, eds. (1975): "Remington's Pharmaceutical Sciences". 15th ed. Mack Publishing. Page 775Philip C. Singer and Werner Stumm (1970): "The solubility of ferrous iron in carbonate-bearing waters". Journal of the American Water Works Association, volume 62, issue 3, pages 198-202.weblink R.E., H.C. Hodge, R.P. Smith, and M.N. Gleason. Clinical Toxicology of Commercial Products. 4th ed. Baltimore: Williams and Wilkins, 1976., p. II-97Wei Sun (2009): "Kinetics of iron carbonate and iron sulfide scale formation in CO2/H2S corrosion". PhD Thesis, Ohio University.Ozlem Sel, A.V. Radha, Knud Dideriksen, and Alexandra Navrotsky (2012): "Amorphous iron (II) carbonate: Crystallization energetics and comparison to other carbonate minerals related to CO2 sequestration". Geochimica et Cosmochimica Acta, volume 87, issue 15, pages 61â68. {{doi|10.1016/j.gca.2012.03.011}}{{carbonates}}{{iron compounds}}{{Antianemic preparations}} |
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