Editing Iron(II,III) oxide (section)

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| Watchedfields  = changed
| verifiedrevid  = 447334989
| Name           = 
| ImageFile      = Fe3O4.JPG
| ImageFile2     = 
| ImageSize      = 
| IUPACName      = iron(II) diiron(III) oxide<ref>{{nist |name=Iron(ii) diiron(iii) oxide |id=B8022203 |accessdate=2024-12-22}}</ref>
| OtherNames     = ferrous ferric oxide, ferrosoferric oxide, iron(II,III) oxide, magnetite, black iron oxide, lodestone, rust
| SystematicName = 
| Section1       = {{Chembox Identifiers
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = 17215625
| UNII_Ref = {{fdacite|correct|FDA}}
| UNII = XM0M87F357
| InChI = 1/3Fe.4O/rFe3O4/c1-4-2-6-3(5-1)7-2
| InChIKey = SZVJSHCCFOBDDC-QXRQKJBKAR
| StdInChI_Ref = {{stdinchicite|correct|chemspider}}
| StdInChI = 1S/3Fe.4O
| StdInChIKey_Ref = {{stdinchicite|correct|chemspider}}
| StdInChIKey = SZVJSHCCFOBDDC-UHFFFAOYSA-N
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo = 1317-61-9
| PubChem = 16211978
| ChEBI_Ref = {{ebicite|correct|EBI}}
| ChEBI = 50821
| ChEMBL_Ref = {{ebicite|changed|EBI}}
| ChEMBL = 1201867
| SMILES = O1[Fe]2O[Fe]O[Fe]1O2
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| Section2       = {{Chembox Properties
| Formula = Fe<sub>3</sub>O<sub>4</sub><br />
FeO.Fe<sub>2</sub>O<sub>3</sub>
| MolarMass = 231.533 g/mol
| Appearance = solid black powder
| Density = 5 g/cm<sup>3</sup>
| MeltingPtC = 1597
| BoilingPtC = 2623<ref>[http://preserve.lehigh.edu/cgi/viewcontent.cgi?article=1002&context=cas-lehighreview-vol-15 Magnetite (Fe3O4): Properties, Synthesis, and Applications] {{Webarchive|url=https://web.archive.org/web/20170720012739/http://preserve.lehigh.edu/cgi/viewcontent.cgi?article=1002&context=cas-lehighreview-vol-15 |date=2017-07-20 }} Lee Blaney, Lehigh Review 15, 33-81 (2007). See Appendix A, p.77</ref>
| Solubility = 
| RefractIndex = 2.42<ref>Pradyot Patnaik. ''Handbook of Inorganic Chemicals''. McGraw-Hill, 2002, {{ISBN|0-07-049439-8}}</ref>
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| Section3       = {{Chembox Hazards
| MainHazards = 
| FlashPt = 
| AutoignitionPt = 
| NFPA-H = 0
| NFPA-F = 0
| NFPA-R = 1
| NFPA-S = OX
 }}
|Section4={{Chembox Thermochemistry
| DeltaHf = −1120.89&nbsp;kJ·mol<sup>−1</sup><ref>{{Cite journal|url=https://webbook.nist.gov/cgi/cbook.cgi?ID=C1309382&Units=SI&Mask=2|title=NIST-JANAF Themochemical Tables | edition = Fourth |year=1998|pages=1–1951| vauthors = Chase MW |journal=NIST }}</ref>
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| Section5       = 
| Section6       = 
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'''Iron(II,III) oxide''', or black iron oxide, is the chemical compound with formula Fe<sub>3</sub>O<sub>4</sub>. It occurs in nature as the mineral [[magnetite]]. It is one of a number of [[iron oxides]], the others being [[iron(II) oxide]] (FeO), which is rare, and [[iron(III) oxide]] (Fe<sub>2</sub>O<sub>3</sub>) which also occurs naturally as the mineral [[hematite]]. It contains both Fe<sup>2+</sup> and Fe<sup>3+</sup> ions and is sometimes formulated as FeO&nbsp;∙&nbsp;Fe<sub>2</sub>O<sub>3</sub>. This iron oxide is encountered in the laboratory as a black powder. It exhibits permanent magnetism and is [[Ferrimagnetism|ferrimagnetic]], but is sometimes incorrectly described as [[Ferromagnetism|ferromagnetic]].<ref name = "Greenwood">{{Greenwood&Earnshaw|name-list-style = vanc }}</ref> Its most extensive use is as a black pigment (see: [[Mars Black (pigment)|Mars Black]]). For this purpose, it is synthesized rather than being extracted from the naturally occurring mineral as the particle size and shape can be varied by the method of production.<ref name = "Cornell">{{cite book | vauthors = Cornell RM, Schwertmann U | date = 2007 | title = The Iron Oxides: Structure, Properties, Reactions, Occurrences and Uses | publisher = Wiley-VCH | isbn = 978-3-527-60644-3 }}</ref>