Gallium(III) hydroxide

Gallium(III) hydroxide

Names
IUPAC name Gallium(III) hydroxide
Systematic IUPAC name Trihydroxidogallium
Other names Gallium trihydroxide Orthogallic acid Inorganic gallic acid
Identifiers
CAS Number	12023-99-3^Y
3D model (JSmol)	Interactive image
ChemSpider	8329553^Y
ECHA InfoCard	100.031.521
PubChem CID	10154045
UNII	S3PJW60NUM^Y
CompTox Dashboard (EPA)	DTXSID90152744
InChI InChI=1S/Ga.3H2O/h;3*1H2/q+3;;;/p-3^Y Key: DNUARHPNFXVKEI-UHFFFAOYSA-K^Y 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
Solubility product (Ksp)	7.28×10^−36[1]
Related compounds
Other cations	Boric acid Aluminium hydroxide Indium(III) hydroxide Thallium(III) hydroxide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). N verify (what is ^YN ?) Infobox references

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

References

1. John Rumble (June 18, 2018). CRC Handbook of Chemistry and Physics (99 ed.). CRC Press. pp. 5–188. ISBN 978-1138561632.
2. Anthony John Downs, (1993), Chemistry of Aluminium, Gallium, Indium, and Thallium, Springer, ISBN 978-0-7514-0103-5
3. Crystal Structure of a new mineral söhngeite, J.D. Scott, The American Mineralogist, (1971), 56, 355