Input interpretation
![iron(II) oxide](../image_source/1b9f8ac38bc55e5bf094a5fbdd113805.png)
iron(II) oxide
Chemical names and formulas
![formula | FeO name | iron(II) oxide IUPAC name | oxoiron alternate names | ferrous monoxide | ferrous oxide | iron(2) oxide | iron monoxide | oxoiron mass fractions | Fe (iron) 77.7% | O (oxygen) 22.3%](../image_source/907a4122678325be28a1efda23462012.png)
formula | FeO name | iron(II) oxide IUPAC name | oxoiron alternate names | ferrous monoxide | ferrous oxide | iron(2) oxide | iron monoxide | oxoiron mass fractions | Fe (iron) 77.7% | O (oxygen) 22.3%
Structure diagram
![Structure diagram](../image_source/2d9c84cb4db436cc5663c9674cc32b52.png)
Structure diagram
![vertex count | 2 edge count | 1 Schultz index | 4 Wiener index | 1 Hosoya index | 2 Balaban index | 1](../image_source/eb8696d79c0a7e5163a2a7044bab6703.png)
vertex count | 2 edge count | 1 Schultz index | 4 Wiener index | 1 Hosoya index | 2 Balaban index | 1
Basic properties
![molar mass | 71.844 g/mol phase | solid (at STP) melting point | 1360 °C density | 5.7 g/cm^3 solubility in water | insoluble](../image_source/5a2e30f254ae0e263ede38b7ae1b055f.png)
molar mass | 71.844 g/mol phase | solid (at STP) melting point | 1360 °C density | 5.7 g/cm^3 solubility in water | insoluble
Units
Solid properties (at STP)
![density | 5.7 g/cm^3](../image_source/000d2500bf6a233e0b68375d0960331b.png)
density | 5.7 g/cm^3
Units
Thermodynamic properties
![specific free energy of formation Δ_fG° | solid | -3.549 kJ/g molar free energy of formation Δ_fG° | solid | -255 kJ/mol specific heat of formation Δ_fH° | solid | -3.786 kJ/g molar heat of formation Δ_fH° | solid | -272 kJ/mol specific entropy S° | solid | 0.8491 J/(g K) molar entropy S° | solid | 61 J/(mol K) molar heat of fusion | 24.1 kJ/mol | specific heat of fusion | 0.335 kJ/g | (at STP)](../image_source/a9dfa4329229419a1a8f8d9c0f6a3aed.png)
specific free energy of formation Δ_fG° | solid | -3.549 kJ/g molar free energy of formation Δ_fG° | solid | -255 kJ/mol specific heat of formation Δ_fH° | solid | -3.786 kJ/g molar heat of formation Δ_fH° | solid | -272 kJ/mol specific entropy S° | solid | 0.8491 J/(g K) molar entropy S° | solid | 61 J/(mol K) molar heat of fusion | 24.1 kJ/mol | specific heat of fusion | 0.335 kJ/g | (at STP)
Chemical identifiers
![CAS number | 1345-25-1 PubChem CID number | 14945 PubChem SID number | 24864959 SMILES identifier | O=[Fe] InChI identifier | InChI=1/Fe.O/rFeO/c1-2 MDL number | MFCD00016095](../image_source/902cc9f8b3b42a1c914786ce07ebe298.png)
CAS number | 1345-25-1 PubChem CID number | 14945 PubChem SID number | 24864959 SMILES identifier | O=[Fe] InChI identifier | InChI=1/Fe.O/rFeO/c1-2 MDL number | MFCD00016095
Toxicity properties
![short-term exposure limit | 10 mg/m^3](../image_source/61ee4d96c0afefbec015b1b7c4390005.png)
short-term exposure limit | 10 mg/m^3
![long-term exposure limit | 5 mg/m^3 (over 8 hours)](../image_source/3ff9c193ec0c2acbf3b0a9e3bfd710bf.png)
long-term exposure limit | 5 mg/m^3 (over 8 hours)