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GALLIUM,31  Ga 69.72

CAS

7440-55-3

Melting Point °C

29.78

Boiling Point °C

2403

Density G/Cm3

5.907

Mohs Hardness @ 20 °C

1.5-2.5

Coef. of Exp. @ 20 °C

5.4 x 10-5

Elec Resistivity Microhm-Cm

53.4

Crystal Structure

Cubic

**UN 2803 Class 8 Corrosive PG III

 
REFERENCE
DATA
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Catalog
No

Product Description

Purity
%

Particle
Size

Cost Per Pound

1-2

3-10

11-25

26-100

GA-101*

gallium metal ingots, 100 gram or 1 kg increments; shipped under dry ice

99.999

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BACKGROUND:
Gallium was discovered spectroscopically by Paul Emile Lecoq de Boisbaudran in 1875. It is a chemical element that is a brittle solid at low temperatures, however, it liquefies slightly above room temperature. It does not occur in free form in nature. No high gallium minerals exist as a primary source of extraction. It is extracted from bauxite, coal, diaspore, germanite and sphalerite.

GALLIUM POWDER APPLICATIONS:
Gallium has a bright silvery white color. When solid, the metal fractures conchoidally, similarly to glass. It expands by 3.1 percent when solidified. The low melting point of 29.78°C allows the metal to melt in one's hand. High-purity gallium can be dissolved slowly by mineral acids. Some of the major applications include:

Semiconductor
Gallium is a common semiconductor in the electronic industry. The semiconductor applications are the main reason for the low-cost commercial availability of gallium as an extremely high-purity metal.

Wetting and Alloy Improvement
Gallium wets glass and porcelain, so it can be used to create brilliant mirrors. It alloys with most metals, and is used as a component in low melting alloys. It can also be used in solders to aid wetting and flow characteristics.

Liquid Alloys
A liquid gallium-tin alloy can be used in place of water for computer chip cooling. It conducts heat better than water. It is also used in high temperature thermometers.

Biomedical
Gallium can be used in a low temperature liquid eutectic alloy that is used in fever thermometers. Gallium Salts are used as radiopharmaceutical agents in nuclear medicine imaging. The body concentrates levels of the gallium in areas of inflammation.




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