| IUPAC name
| Other names
|Molar mass|| 169.33 g/mol (anhydrous)|
|Appearance|| Grey-white crystalline (anhydrous)|
Colorless solid (octahydrate)
|Density|| 5.68 g/cm3 (anhydrous)|
2.292 g/cm3 (octahydrate)
|Melting point||450 °C (842 °F; 723 K)|
|Boiling point||800 °C (1,470 °F; 1,070 K) (decomposes)|
0.091 g/100 ml (20 °C)
0.168 g/100 ml
|Solubility||Reacts with acids|
|Vapor pressure||~0 mmHg|
|Safety data sheet||Sigma-Aldrich|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Barium peroxide is the inorganic compound with the formula BaO2.
- BaO2 + H2SO4 → H2O2 + BaSO4
The insoluble barium sulfate is filtered from the mixture.
Barium peroxide is a white solid, insoluble in water.
Barium peroxide is sold by lab suppliers. So far there aren't any sellers on eBay and Amazon.
Barium peroxide can be made by the reversible reaction of O2 with barium oxide. The peroxide forms around 500 °C and oxygen is released above 820 °C.
- 2 BaO + O2 ⇌ 2 BaO2
- Flash powders and fireworks
- Make concentrated hydrogen peroxide
Barium peroxide is corrosive and an oxidizer. Proper protection must be worn when handling this compound.
Barium peroxide should be kept in closed plastic or glass bottles.
Can be neutralized by adding diluted sulfuric acid then iron oxide, to decompose the hydrogen peroxide.