| Barium oxide |
| Image:Barium oxide.jpg |
| General |
| Molecular formula |
BaO |
| Molar mass |
153.3 g/mol |
| Appearance |
white solid |
| CAS number |
[1304-28-5] |
| Properties |
| Density and phase |
5.7 g/cm3, solid |
| Solubility in water |
3.8 g/100 ml (20 °C) |
| Melting point |
1923 °C |
| Boiling point |
~2000 °C |
| Structure |
Coordination
geometry |
? |
| Crystal structure |
? |
| Hazards |
| MSDS |
External MSDS |
| EU classification |
Harmful (Xn) |
| NFPA 704 |
|
| R-phrases |
R20/22 |
| S-phrases |
S2, S28 |
| Flash point |
non-flammable |
| Supplementary data page |
Structure and
properties |
n, εr, etc. |
Thermodynamic
data |
Phase behaviour
Solid, liquid, gas |
| Spectral data |
UV, IR, NMR, MS |
| Related compounds |
| Other anions |
Barium hydroxide
Barium peroxide |
| Other cations |
Calcium oxide
Strontium oxide |
Except where noted otherwise, data are given for
materials in their standard state (at 25 °C, 100 kPa)
|
Barium oxide is a white hygroscopic compound formed by the reaction of barium with oxygen. It transforms into barium hydroxide on contact with water.
External link
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