Chloroauric acid CAS# 16903-35-8

Hydrogen tetrachloroaurate, Promotion Season Now in Store and Free Sample for Testing with Factory Price

• Chemical Name:  Chloroauric acid
• CAS No.:     16903-35-8
• Molecular Fomula: ：AuCl4H
• Molecular weight：339.79
• Appearance: yellow Liquid
• Sample：Available

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Description of Hydrogen tetrachloroaurate

• Chloroauric acid is an inorganic compound with the chemical formula HAuCl 4. Both the trihydrate and tetrahydrate are known. It is an orange-yellow solid, a common precursor to other gold compounds and an intermediate in the purification of gold metal. Both the trihydrate and tetrahydrate are available commercially.

Basic Info of Hydrogen tetrachloroaurate

Basic Info
Numbering system
Properties
Safety Info
Basic Info

Numbering system

Properties

Safety Info

What is Chloroauric acid?

• With the progress of science and technology and the development of society, chemical products have invariably permeated our daily lives, in medicine, food, cosmetics, electronics, industry, and other areas, becoming an essential part of our lives. One such product is Gold  chloride    which has developed particularly rapidly in recent years. Do you know about Gold  chloride ?
• The official answer：Chloroauric acid is also called “gold chloride”, “gold chloride tetrahydrate”. Chemical formula HAuCl4-4H2O. molecular weight 411.85. yellow needle-like crystals. Toxic! Corrosive. Soluble in water, soluble in ethanol, ether, slightly soluble in trichloromethane. Anhydrous chloroauric acid can be crystallized from ethanol solution. Decomposed by heat. Exposure to generate black spots, heat to 120 ℃ decompositions for gold trichloride. In an alkaline solution with KI, the reaction can precipitate brown gold. In an acidic solution with tin dichloride is generated “cinnamon purple”. Use methyl orange to make its aqueous solution is purple, 1 ~ 3 drops of hydrochloric acid to make green, and then meet the gold salt solution becomes lavender; add cold potassium hydroxide solution to generate gold hydroxide precipitate, pass sulfur dioxide is reduced to gold powder. Method: pure gold will be dissolved in aqua regia (or chlorine saturated hydrochloric acid) by distillation, crystallization is obtained. Uses: Chloroauric acid is mainly used for trace analysis, alkaloid determination, electroplating and photographic, gold powder, porcelain coloring, red glass manufacturing, special ink, and medicine for tuberculosis, can also be used as analytical reagents, rubidium (Rb), cesium (Cs) trace analysis.

What’s the application of Chloroauric acid?

• Can be used for semiconductor and integrated circuit lead frame local gold plating, printed circuit boards, electronic connectors are mainly used for gold plating, special ink, drugs, porcelain gold, red glass, etc., and a variety of gold compounds made of raw materials, photographic industry, and chemical reagents. For the preparation of solution form of stable nanoscale and non-derivatization of colloidal gold particles.

Conclusion

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