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Gold(I) chloride

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Formula  AuCl
Boiling point  298 °C
Density  7.6 g/cm³
Molar mass  232.423 g/mol
Melting point  170 °C
Appearance  yellow solid
Gold(I) chloride httpsuploadwikimediaorgwikipediacommonsthu

Gold(I) chloride is a compound of gold and chlorine with the chemical formula AuCl.

Contents

Preparation

Gold(I) chloride is prepared by thermal decomposition of gold(III) chloride.

Reactions

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 disporpotionates to metallic gold and gold(III) chloride in an autoredox reaction:

3 AuCl → 2 Au + AuCl3

Reaction with potassium bromide yields potassium auric bromide and potassium chloride with separation of metallic gold:

3 AuCl + 4 KBr → KAuBr4 + 2 Au + 3 KCl

Safety

Gold(I) chloride may irritate the skin and eyes, damage kidney function, and reduce white blood cell counts.

References

Gold(I) chloride Wikipedia


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