Loading AI tools
Chemical compound From Wikipedia, the free encyclopedia
Gold(I) chloride is a compound of gold and chlorine with the chemical formula AuCl.
Names | |
---|---|
IUPAC name
Gold(I) chloride | |
Other names
Aurous chloride | |
Identifiers | |
3D model (JSmol) |
|
ChEBI | |
ChemSpider | |
ECHA InfoCard | 100.030.583 |
PubChem CID |
|
UNII | |
CompTox Dashboard (EPA) |
|
| |
| |
Properties | |
AuCl | |
Molar mass | 232.423 g/mol |
Appearance | yellow solid |
Density | 7.6 g/cm3 [1] |
Melting point | 170 °C (338 °F; 443 K) |
Boiling point | 298 °C (568 °F; 571 K) (decomposes) |
very slightly soluble | |
Solubility | soluble in HCl, HBr organic solvents |
−67.0·10−6 cm3/mol | |
Structure | |
Tetragonal, tI16 | |
I41/amd, No. 141 | |
Hazards | |
NFPA 704 (fire diamond) | |
Safety data sheet (SDS) | MSDS |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
|
Gold(I) chloride is prepared by thermal decomposition of gold(III) chloride.
Although there is a region of stability at higher temperatures at the appropriate chlorine vapor pressures, the compound is metastable at ambient conditions. When heated with water, the compound dispropotionates to metallic gold and gold(III) chloride in an autoredox reaction:
At still higher temperatures, around 500 °C, all gold chlorides convert to gold. This conversion is key to the Miller process, which is widely used for the purification of gold.[2]
Reaction with potassium bromide yields potassium auric bromide and potassium chloride with separation of metallic gold:
Gold(I) chloride may irritate the skin and eyes, damage kidney function, and reduce white blood cell counts.
Seamless Wikipedia browsing. On steroids.
Every time you click a link to Wikipedia, Wiktionary or Wikiquote in your browser's search results, it will show the modern Wikiwand interface.
Wikiwand extension is a five stars, simple, with minimum permission required to keep your browsing private, safe and transparent.