Chromium (III) oxide Cr₂O₃ is a very solid refractory powder of green color. Melting point 2435°C, boiling point approx. 4000°C. Density is 5,21 g/cm3. Insoluble in water. Hardness close to corundum, so it is introduced into the composition of polishing agents.
- Formula
- Cr2O3
- Molar mass
- 151.989 g/mol
- CAS Number
- 1308-38-9
- Density
- 5.210 g/cm3
- Purity/Grade
- ≥98.0%
- Appearance
- Green powder
- Initial boiling point and boiling range
- 4,000°C (7,232°F)
- Melting point/freezing point
- 2,435°C (4,415°F)