Chloric acid is also called "gold chloride" and "gold chloride tetrahydrate". The chemical formula is HAuCl4 �· 4H2O. The molecular weight is 411.85. Yellow needle shaped crystals. Poisonous! Corrosive. Easily soluble in water, soluble in ethanol, ether.

1. It can be used for partial gold plating of semiconductor and integrated circuit lead frames, printed circuit boards, and electronic connectors
2. Mainly used for gold plating, special inks, medicines, porcelain gold and red glass, etc., as well as raw materials for the production of various gold compounds, photographic industry and chemical reagents.
3. Used to prepare stable nano-scale and underivatized colloidal gold particles in the form of solution