FeSO4
Ferrous sulfate · Iron(II) sulfate, Green vitriol, Copperas
Ferrous sulfate is an inorganic compound that typically appears as a blue-green crystalline solid. It is widely utilized as a dietary supplement to address iron deficiency and serves as a common chemical reagent in various industrial and laboratory processes.
Key Properties
Cross-validated computational properties for Ferrous sulfate, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Reported Structures
Lowest-energy structures reported for FeSO4, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| Pnma (No. 62) | orthorhombic | 2.72 | 0.0000 | -7.258 | 3.59 |
| Cmcm (No. 63) | orthorhombic | 2.29 | 0.0013 | -7.257 | 3.69 |
| R3 (No. 146) | trigonal | 0.00 | 0.0629 | -6.759 | 2.98 |
| R3 (No. 146) | trigonal | 0.00 | 0.0666 | -6.756 | 3.04 |
| No. 0 | unknown | — | — | — | 0.32 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.39 |
| Pnma (No. 62) | — | — | — | — | — |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.65 |
| Pnma (No. 62) | Orthorhombic | — | — | — | 3.48 |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 3.74 |
| Cmcm (No. 63) | — | — | — | — | — |
| Cmcm (No. 63) | Orthorhombic | — | — | — | 3.47 |
Synthesis Routes
Literature-extracted synthesis procedures targeting FeSO4.
Applications
Where Ferrous sulfate is used.
Frequently Asked Questions
Common questions about Ferrous sulfate, answered from cross-validated data.
What is FeSO4?
Ferrous sulfate is an inorganic compound that typically appears as a blue-green crystalline solid. It is widely utilized as a dietary supplement to address iron deficiency and serves as a common chemical reagent in various industrial and laboratory processes.
What is FeSO4 used for?
What is the band gap of FeSO4?
Is FeSO4 a metal, semiconductor, or insulator?
Is FeSO4 thermodynamically stable?
What is the crystal structure of FeSO4?
What is the density of FeSO4?
How many polymorphs of FeSO4 are known?
How is FeSO4 synthesized?
What elements does FeSO4 contain?
Where does the data for FeSO4 come from?
Related Compounds
Other Oxide Oxygen-Evolution Catalysts in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
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