File:Haematite-unit-cell-3D-balls.png · Wikimedia Commons · See Wikimedia Commons
iron(III) oxide
Sign in to saveAlso known as ferric oxide, iron oxide red, red iron oxide, red oxide, rouge, iron oxide, red, E172(ii), iron sesquioxide
chemical compound
Chemical data
- Formula
- Fe2O3
- Molecular weight
- 159.69 g/mol
- IUPAC name
- oxo(oxoferriooxy)iron
- SMILES
- O=[Fe]O[Fe]=O
- InChIKey
- JEIPFZHSYJVQDO-UHFFFAOYSA-N
- Polar surface area
- 43.4 Ų
- H-bond donors
- 0
- H-bond acceptors
- 3
- Formal charge
- 0
via PubChem
Wikidata facts
- Subclass of
- iron oxide
- Has part
- oxygen
- Mass
- 159.85461886
- Image
- Eisen(III)-oxid.JPG
- Has use
- food additive
Show 10 more facts
- Commons category
- Iron(III) oxide
- canonical SMILES
- [Fe+3].[Fe+3].[O-2].[O-2].[O-2]
- chemical formula
- Fe₂O₃
- NIOSH Pocket Guide ID
- 0344
- density
- 5.24
- immediately dangerous to life or health
- 2500
- melting point
- 2849
- vapor pressure
- 0
- time-weighted average exposure limit
- 15
- boiling point
- 1987
via Wikidata · CC0
~10 min read
Encyclopedic overview
Iron(III) oxide in a vial
Iron(III) oxide or ferric oxide is the inorganic compound with the formula Fe2O3. It occurs in nature as the mineral hematite, which serves as the primary source of iron for the steel industry. It is also known as red iron oxide, especially when used in pigments.
Excerpted from Wikipedia’s “iron(III) oxide” article, available under the CC BY-SA 4.0 licence.