Gallium(III) hydroxide
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| Gallium(III) hydroxide | |
|---|---|
| Image:Gallium(III) hydroxide.jpg | |
| Other names | Gallium trihydroxide |
| Identifiers | |
| CAS number | [12023-99-3] |
| Properties | |
| Molecular formula | Ga(OH)3 |
| Molar mass | 120.7437 g/mol |
| Melting point |
29.78 °C |
| Boiling point |
2403 °C |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Gallium hydroxide, Ga(OH)3, is the normal mineral form of gallium in the Earth's crust.
Gallium hydroxide is not seen as a discrete mineral; rather, gallium replaces aluminium in ores such as bauxite. Rich sources may contain almost 1% Ga replacing Al, but a more typical value is a hundred times less.
Gallium hydroxide is amphoteric. In strongly acid conditions, gallium ion, Ga3+ is formed; in strongly basic conditions, Ga(OH)4-, is formed.
Salts of Ga(OH)4- are sometimes called gallates.
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