Chloroauric acid

Chloroauric acid is an inorganic acid with the formula . Pure chloroauric acid is a yellow powder but it is usually seen dissolved in hydrochloric acid.

 Preparation 
Chloroauric acid can be made by reacting gold with aqua regia.

 Uses 
It is an intermediate in the gold purification process, where gold is separated from other metals such as silver and copper. It is used as a toner in photography and microscopy. It is used to create gold nanoparticles.

 Safety 
Chloroauric acid is corrosive and toxic and must be handled with caution. Gloves and a face shield should be worn when handling the acid.

References

Category:Solvated proton acids
Category:Chlorine compounds
Category:Gold compounds