Gallium(III) hydroxide

Gallium(III) hydroxide

Chembox new
Name = Gallium(III) hydroxide
ImageFile = Gallium(III) hydroxide.jpg
ImageName = Gallium(III) hydroxide
OtherNames = Gallium trihydroxide
Section1 = Chembox Identifiers
CASNo = 12023-99-3
Section2 = Chembox Properties
Formula = Ga(OH)3
MolarMass = 120.7437 g/mol
Density =
MeltingPt = 29.78 °C
BoilingPt = 2403 °C

Gallium hydroxide, Ga(OH)3, is the normal mineral form of gallium in the Earth's crust.

Gallium hydroxide is very rarely seen as a discrete mineral called söhngeite; much more commonly, 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.

References


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