File:Chromium_oxide_cropped.jpg · Wikimedia Commons · See Wikimedia Commons
dichromium trioxide
Sign in to saveAlso known as green oxide of chromium, green chromium oxide, chromium(III) sesquioxide, chromium sesquioxide, chromia, chromium oxide, chromium(III) oxide
chemical compound
Chemical data
- Formula
- Cr2O3
- Molecular weight
- 151.99 g/mol
- IUPAC name
- chromium;trioxochromium
- SMILES
- O=[Cr](=O)=O.[Cr]
- InChIKey
- QDOXWKRWXJOMAK-UHFFFAOYSA-N
- Polar surface area
- 51.2 Ų
- H-bond donors
- 0
- H-bond acceptors
- 3
- Formal charge
- 0
via PubChem
Wikidata facts
- Has part
- chromium
- Mass
- 151.865759
- Image
- Chromium(III)-oxide-sample.jpg
Show 10 more facts
- Commons category
- Chromium(III) oxide
- canonical SMILES
- O=[Cr]O[Cr]=O
- chemical formula
- Cr₂O₃
- NIOSH Pocket Guide ID
- 0140
- immediately dangerous to life or health
- 25
- time-weighted average exposure limit
- 0.5
- melting point
- 2330
- density
- 5.21
- boiling point
- 4000
- standard enthalpy of formation
- -1128
via Wikidata · CC0
~5 min read
Encyclopedic overview
Chromium(III) oxide (or chromia) is an inorganic compound with the formula Cr 2O 3. It is one of the principal oxides of chromium and is used as a pigment. In nature, it occurs as a rare mineral called eskolaite.
Structure and properties
Excerpted from Wikipedia’s “dichromium trioxide” article, available under the CC BY-SA 4.0 licence.