Gallium(III) hydroxide

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Gallium(III) hydroxide
CAS number 12023-99-3 N
PubChem 10154045
ChemSpider 8329553 YesY
Jmol-3D images Image 1
Molecular formula Ga(OH)3
Molar mass 120.7437 g/mol
Related compounds
Other cations aluminium hydroxide,
Indium(III) hydroxide
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Gallium hydroxide, Ga(OH)3 is formed as a gel following the addition of ammonia to Ga3+ salts.[1] It is also found in nature as the rare mineral söhngeite which is reported to contain octahedrally coordinated gallium atoms[2] Gallium hydroxide is amphoteric. In strongly acidic conditions, the gallium ion, Ga3+ is formed. In strongly basic conditions, Ga(OH)4 is formed. Salts of Ga(OH)4 are sometimes called gallates.[1]


  1. ^ a b Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, ISBN 978-0-7514-0103-5
  2. ^ Crystal Structure of a new mineral söhngeite, J.D. Scott, The American Mineralogist, (1971), 56, 355