Hydrogen tetrachloroaurate(III) trihydrate

Description:

Hydrogen tetrachloroaurate(III) trihydrate, also known as Auric chloride, is a chemical compound with the molecular formula of AuCl4H3O. Its CAS number is 16961-25-4, and it has a molecular weight of 357.79 g/mol. It is an inorganic compound with a yellow solid appearance and a metallic taste. It is a salt that is often used in electroplating, as well as in gold plating and the production of gold-bearing alloys.

Chemical Properties:

Yellow Solid

Uses:

In the laboratory, Auric chloride is a useful reagent for the determination of gold and other metals. It is a strong oxidizing agent and reacts with most metals, forming insoluble salts which can be filtered and assayed for their gold content. It is also used in the preparation of colloidal gold, which is widely used in the electronics industry.

Auric chloride is also used in electroplating, where it is used to deposit a thin layer of gold onto a metal surface. In the electroplating process, a solution of Auric chloride is mixed with a metal salt, such as copper sulfate. When electricity is applied to the solution, the gold ions in the Auric chloride react with the metal salt and deposit a thin layer of gold onto the surface of the metal.