Gallium(III) hydroxide

Gallium(III) hydroxide

Names
Other names Gallium trihydroxide
Identifiers
CAS Number	12023-99-3
ChemSpider	8329553
Jmol 3D model	Interactive image
PubChem	10154045
InChI InChI=1S/Ga.3H2O/h;3*1H2/q+3;;;/p-3 Key: DNUARHPNFXVKEI-UHFFFAOYSA-K InChI=1/Ga.3H2O/h;3*1H2/q+3;;;/p-3 Key: DNUARHPNFXVKEI-DFZHHIFOAG
SMILES [Ga+3].[OH-].[OH-].[OH-]
Properties
Chemical formula	Ga(OH)3
Molar mass	120.7437 g/mol
Related compounds
Other cations	aluminium hydroxide, Indium(III) hydroxide
Except where otherwise noted, 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]

References

1. 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