GOLD (I) CHLORIDE Chemical Properties

Melting point:

289 °C (dec.)(lit.)

Density 

7.57 g/mL at 25 °C(lit.)

storage temp. 

Inert atmosphere,2-8°C

form 

Powder

Specific Gravity

7.57

color 

Yellow to green

Water Solubility 

Very slightly soluble in water. soluble in HCl, HBr organic solvents.

Sensitive 

Moisture Sensitive

Merck 

14,4515

Solubility Product Constant (Ksp)

pKsp: 12.7

CAS DataBase Reference

10294-29-8(CAS DataBase Reference)

EPA Substance Registry System

Gold chloride (AuCl) (10294-29-8)

Safety Information

Hazard Codes 

C

Risk Statements 

34-43

Safety Statements 

26-27-36/37/39-45

RIDADR 

UN 3260 8/PG 2

WGK Germany 

3

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

HS Code 

28439000

MSDS

• Language:English Provider:SigmaAldrich
• Language:English Provider:ACROS
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GOLD (I) CHLORIDE Usage And Synthesis

Uses

Gold (I) Chloride is used chiefly in photography as a print toning agent, as a starting solution to form other gold compounds, as a precursor to the preparation of Ultra Pure Gold Metal, in gilding ceramic ware and glass, and in the manufacture of purple of Cassius.

Chemical Properties

Yellow orthorhombic crystals; density 7.6 g/cm3; decomposes on heating at about 298°C; loses its stoichiometric composition at 170°C; very slightly soluble in cold water; decomposes in hot water; soluble in hydrochloric and hydrobromic acids, and alkali cyanide solutions.

Physical properties

Yellow orthorhombic crystals; density 7.6 g/cm³; decomposes on heating at about 298°C; loses its stoichiometric composition at 170°C; very slightly soluble in cold water; decomposes in hot water; soluble in hydrochloric and hydrobromic acids, and alkali cyanide solutions.

Uses

Gold(I) chloride is used as a starting material for the preparation of Phosphine ligated gold(I) complexes, which is used as catalysts in synthetic chemistry. It is also used to prepare metallic gold and potassium auric bromide and potassium chloride.

Preparation

Gold(I) chloride is prepared by thermal decomposition of gold trichloride: AuCl3 AuCl + Cl2.

General Description

The structure of gold chloride is monoclinic. It sublimes at elevated temperatures.

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