| Identifiers | |
|---|---|
3D model (JSmol) |
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| |
| |
| Properties | |
| Bi2O5 | |
| Appearance | Powder |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Bismuth pentoxide is a chemical compound composed of bismuth and oxygen, with the chemical formula Bi2O5. It is a dark red powder decomposing above 100 °C.[citation needed] It is not known as a pure substance, but is usually mixed with water, bismuth tetroxide or bismuth trioxide.
An uncharacterized chocolate-brown or orange powder is produced by boiling salts of bismuthate(V) (e.g. NaBiO3) in nitric acid.[citation needed] The color of the resulting product is dependent on the specific bismuthate used, and it is possibly a mix of residual bismuthate, bismuth pentoxide, and bismuth tetroxide.