Manganese(II) oxide
Manganese(II) oxide is an inorganic compound with chemical formula MnO. It forms green crystals. The compound is produced on a large scale as a component of fertilizers and food additives.
| Names | |
|---|---|
| IUPAC name
Manganese(II) oxide | |
| Other names | |
| Identifiers | |
| ECHA InfoCard | 100.014.269 |
PubChem CID |
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| RTECS number |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| MnO | |
| Molar mass | 70.9374 g/mol |
| Appearance | green crystals or powder |
| Density | 5.43 g/cm3 |
| Melting point | 1,945 °C (3,533 °F; 2,218 K) |
| insoluble | |
| Solubility | soluble in acid |
| +4850.0·10−6 cm3/mol | |
Refractive index (nD) |
2.16 |
| Structure | |
| Halite (cubic), cF8 | |
| Fm3m, No. 225 | |
| Octahedral (Mn2+); octahedral (O2−) | |
| Thermochemistry | |
Std molar entropy (S⦵298) |
60 J·mol−1·K−1 |
Std enthalpy of formation (ΔfH⦵298) |
−385 kJ·mol−1 |
| Hazards | |
| NFPA 704 (fire diamond) | |
| Flash point | Non-flammable |
| Related compounds | |
Other anions |
Manganese(II) fluoride Manganese(II) sulfide Manganese(II) selenide Manganese(II) telluride |
Other cations |
Iron(II) oxide |
| Manganese(II,III) oxide Manganese(III) oxide Manganese dioxide Manganese heptoxide | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |
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