Material name

Purity

 size

High purity Germanium

5N-7N

Germanium Ingot

5N

Germanium powder

5N

 100,200,325 mesh

Germanium Dioxide

5N-6N

Characteristics:

Lustrous, hard, grayish-white solid metalloid in the carbon group, chemically similar to its group neighbors tin and silicon. Purified germanium is a 'p-type' semiconductor material. Conductivity depends largely on added impurities. Attacked by nitric acid and aqua regia, but stable in water, acids, and alkalies in absence of dissolved oxygen, low toxicity.

Applications:

Isolated germanium is mainly used as a semiconductor material for transistors. The first generation of semiconductors were based solely on germanium. However, most of today’s semiconductor production is based on silicon and germaniums use in electronics are in fibre-optic systems, infrared optics and in solar cell applications..

Symbol:

Ge

Cas:

7440-56-4

Atomic Number:

32

Atomic Weight:

72.59

Density:

5.323 gm/cc

Melting Point:

937.4 oC

Boiling Point:

2830 oC

Thermal Conductivity:

0.602 W/cm/K @ 302.93 K

Electrical Resistivity:

microhm-cm @ 20 oC

Electronegativity:

1.8 Paulings

Specific Heat:

0.077 Cal/g/K @ 25 oC

Heat of Vaporization:

68 K-cal/gm atom at 2830 oC

First step:

Packed in vacuum polyester bag/ plastic bag.

Second step:

Packed in vacuum polyester bag or aluminum foil bag again.

Third step:

Wrapped with bubble, load to the carton and seal the carton