Gourt Home::Gourt :: Barium oxide
| Barium oxide | |
|---|---|
| General | |
| Molecular formula | BaO |
| Molar mass | 153.3 g/mol |
| Appearance | white solid |
| CAS number | * |
| 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 | |
| S-phrases | , |
| 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) Chemical infobox | |
Barium oxide is a white hygroscopic compound formed by the reaction of barium with oxygen. It transforms into barium hydroxide on contact with water.
Barium oxide is used as a coating for hot cathodes, and in certain kinds of glass such as optical crown glass and cathode ray tubes.
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"Barium oxide"