GOLD(I) IODIDE Chemical Properties

Melting point:

120 °C (dec.)(lit.)

Density 

8.25 g/mL at 25 °C(lit.)

storage temp. 

Keep in dark place,Inert atmosphere,Room temperature

solubility 

insoluble in H2O; soluble in CN solution

form 

Powder

color 

yellowish-green

Specific Gravity

8.25

Water Solubility 

Insoluble in water. Soluble in alkali iodide, cyanide solutions. Decomposes in warm acids

Sensitive 

Moisture Sensitive

Solubility Product Constant (Ksp)

pKsp: 22.8

Stability:

store cold

CAS DataBase Reference

10294-31-2(CAS DataBase Reference)

EPA Substance Registry System

Gold iodide (AuI) (10294-31-2)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-37/39

RIDADR 

UN3260

WGK Germany 

3

TSCA 

Yes

HazardClass 

8

PackingGroup 

III

MSDS

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• Language:English Provider:ALFA

GOLD(I) IODIDE Usage And Synthesis

Chemical Properties

yellowish to greenish yellow powder(s); decomposes slowly at ordinary temp, rapidly at elevated temp [MER06]

Uses

Gold(I) iodide is employed in the synthesis of chemicals.

General Description

AuI can be prepared by adding KI in an acidic solution of HAuCl₄.

Purification Methods

It has been prepared by heating gold and iodine in a tube at 120o for 4 months. Since it decomposes to Au and I2 in the presence of UV light and heat, then the main impurity is Au. The salt is therefore purified by heating at 120o with I2 for several weeks. The crystals should be kept dry and in a cool place in the dark. [Weiss & Weiss Z Naturforsch 11B 604 1956.]

GOLD(I) IODIDE(10294-31-2)Related Product Information

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