Gold(III) oxide

Gold(III) oxide

Chembox new
ImageFile =
ImageSize = 100px
IUPACName = Gold(III) oxide
OtherNames =
Section1 = Chembox Identifiers
CASNo = 1303-58-8
PubChem =
SMILES =


Section2 = Chembox Properties
Formula = Au2O3
MolarMass = 441.93
Appearance = red-brown solid
Density = 3,6 g/cm3 at 20 °C [ [http://www.alfa-chemcat.com/daten_msds/D/12161_-_D.pdf MSDS (alpha-aesar, German)] ]
MeltingPt = decomposes at 160 °C
BoilingPt =
Solubility = insoluble in water, soluble in hydrochloric and nitric acid
Section3 = Chembox Hazards
MainHazards =
FlashPt =
Autoignition =

Gold(III) oxide (Au2O3) is the stablest oxide of gold. It is a red-brown, thermally unstable solid that decomposes at 160 °C. Greenwood&Earnshaw] The hydrated form is weakly acidic and dissolves in concentrated alkali to form salts that are believed to contain the [Au(OH)4] − ion.

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