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Iron(III) oxide

IUPAC: oxo(oxoferriooxy)iron

Fe2O3 Inorganic Compounds CAS 1309-37-1
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Quick Reference
Formula / NotationFe2O3
CAS Number1309-37-1
Molecular Weight159.69
Melting PointIron 2664 °F
Density5.25 g/cu cm
SolubilitySoluble in acids; insoluble in water, alcohol, ether
AppearanceDry Powder, Other Solid; Dry Powder, Water or Solvent Wet Solid; Other Solid; Liquid, Other Solid; Dry Powder; Water or Solvent Wet Solid; Liquid; Dry Powder, Pellets or Large Crystals; Pellets or ...
Also Known Asoxo(oxoferriooxy)iron; Iron trioxide; Iron oxide, red; iron(3+) oxide; Anhydrous Ferric Oxide; Anhydrous Iron (III) Oxide; CHEBI:50819; Ferrum Oxydatum; Iron oxide,; Hematite 8124
CategoryInorganic Compounds

What is Iron(III) oxide?

Iron(III) oxide (Fe2O3) is an inorganic compound that appears as Dry Powder, Other Solid; Dry Powder, Water or Solvent Wet Solid; Other Solid; Liquid, Other Solid; Dry Powder; Water or Solvent Wet Solid; Liquid; Dry Powder, Pellets or Large Crystals; Pellets or .... It has a molecular weight of 159.69 g/mol. Its IUPAC name is oxo(oxoferriooxy)iron. Melting point: Iron 2664 °F.

Formula & Notation

Fe2O3

IUPAC Name: oxo(oxoferriooxy)iron

Other Names / Synonyms: oxo(oxoferriooxy)iron; Iron trioxide; Iron oxide, red; iron(3+) oxide; Anhydrous Ferric Oxide; Anhydrous Iron (III) Oxide; CHEBI:50819; Ferrum Oxydatum; Iron oxide,; Hematite 8124

Properties & Characteristics

Appearance: Dry Powder, Other Solid; Dry Powder, Water or Solvent Wet Solid; Other Solid; Liquid, Other Solid; Dry Powder; Water or Solvent Wet Solid; Liquid; Dry Powder, Pellets or Large Crystals; Pellets or .... Molecular formula: Fe2O3. Molecular weight: 159.69 g/mol. Melting point: Iron 2664 °F. Density: 5.25 g/cu cm. Solubility: Soluble in acids; insoluble in water, alcohol, ether. Vapor pressure: 0 mm Hg (approximate).

Physical Data

PropertyValue
Melting PointIron 2664 °F
Density5.25 g/cu cm
Molecular Weight159.69
SolubilitySoluble in acids; insoluble in water, alcohol, ether
AppearanceDry Powder, Other Solid; Dry Powder, Water or Solvent Wet Solid; Other Solid; Liquid, Other Solid; Dry Powder; Water or Solvent Wet Solid; Liquid; Dry Powder, Pellets or Large Crystals; Pellets or ...

Uses & Applications

Used in industrial processes, materials science, semiconductor manufacture, ceramics, or as a catalyst.

Safety Information

May be corrosive, toxic, or an oxidising agent. Handle in well-ventilated area. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Iron(III) oxide
Formula Fe2O3
CAS Number 1309-37-1
Molecular Weight 159.69
Synonyms oxo(oxoferriooxy)iron; Iron trioxide; Iron oxide, red; iron(3+) oxide; Anhydrous Ferric Oxide; Anhydrous Iron (III) Oxide; CHEBI:50819; Ferrum Oxydatum; Iron oxide,; Hematite 8124

Frequently Asked Questions

Iron(III) oxide (Fe2O3) is an inorganic compound that appears as Dry Powder, Other Solid; Dry Powder, Water or Solvent Wet Solid; Other Solid; Liquid, Other Solid; Dry Powder; Water or Solvent Wet Solid; Liquid; Dry Powder, Pellets or Large Crystals; Pellets or .... It has a molecular weight of 159.69 g/mol. Its IUPAC name is oxo(oxoferriooxy)iron. Melting point: Iron 2664 °F.

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.