   | |
| Identifiers | |
|---|---|
3D model (JSmol) | |
| |
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| Properties | |
| MnNa2O4 | |
| Molar mass | 164.914 g·mol−1 |
| Appearance | deep green solid |
| Related compounds | |
Related compounds | Barium manganate |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Sodium manganate is theinorganic compound with theformulaNa2MnO4. This deep green solid is a rarely encountered analogue of the related saltK2MnO4. Sodium manganate is rare because it cannot be readily prepared from the oxidation of manganese dioxide and sodium hydroxide. Instead this oxidation reaction tends to stop at producingsodium hypomanganate, Na3MnO4, and even this Mn(V) salt is unstable in solution.[1] Sodium manganate can be produced byreduction of sodium permanganate under basic conditions:
Because NaMnO4 is difficult to prepare,sodium permanganate is more expensive thanpotassium permanganate.
