Iron(II) oxide
| Names | |
|---|---|
| IUPAC name
Iron(II) oxide | |
| Other names
Ferrous oxide, Iron monoxide, Wüstite | |
| Identifiers | |
3D model (JSmol) |
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| ChEBI | |
| ChemSpider | |
| ECHA InfoCard | 100.014.292 |
| 13590 | |
PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| FeO | |
| Molar mass | 71.844 g/mol |
| Appearance | black crystals |
| Density | 5.745 g/cm3 |
| Melting point | 1,377 °C (2,511 °F; 1,650 K) |
| Boiling point | 3,414 °C (6,177 °F; 3,687 K) |
| Insoluble | |
| Solubility | insoluble in alkali, alcohol dissolves in acid |
| +7200×10−6 cm3/mol | |
Refractive index (nD) |
2.23 |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
can be combustible under specific conditions |
| NFPA 704 (fire diamond) | |
| 200 °C (392 °F; 473 K) | |
| Safety data sheet (SDS) | ICSC 0793 |
| Related compounds | |
Other anions |
Iron(II) sulfide Iron(II) selenide Iron(II) telluride |
Other cations |
Manganese(II) oxide Cobalt(II) oxide |
| Iron(II,III) oxide Iron(III) oxide | |
Related compounds |
Iron(II) fluoride |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
Iron(II) oxide or ferrous oxide is the inorganic compound with the formula FeO. Its mineral form is known as wüstite. One of several iron oxides, it is a black-colored powder that is sometimes confused with rust, the latter of which consists of hydrated iron(III) oxide (ferric oxide). Iron(II) oxide also refers to a family of related non-stoichiometric compounds, which are typically iron deficient with compositions ranging from Fe0.84O to Fe0.95O.