| Names | |
|---|---|
| Other names
Manganese dihydroxide, manganese hydroxide, Manganous hydroxide
|
|
| Identifiers | |
| ECHA InfoCard | 100.126.826 |
| Properties | |
| H2MnO2 | |
| Molar mass | 88.95 g·mol−1 |
| Appearance | white solid |
| Density | 3.258 g/cm3 |
| Melting point | decomposes |
| 0.00034 g/100 mL at 18 °C. | |
|
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
|
| Infobox references | |
Manganese(II) hydroxide is the inorganic compound with the formula Mn(OH)2. It is a white solid although samples darken quickly upon exposure to air owing to oxidation. It is poorly soluble in water.
Manganese(II) hydroxide precipitates as a solid when an alkali metal hydroxide is added to an aqueous solution of Mn2+ salt:
Manganese(II) hydroxide oxidizes readily in air, as indicated by darkening of samples.
The compound adopts the brucite structure, as do several other metal dihydroxides.