Germanium

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MATERIAL OVERVIEW

Characteristics: Shiny, reflective, dark silvery gray metalloid, pure germanium is a 'p-type' semiconductor. 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. Germanium is too brittle and hard to be rolled or drawn.

Germanium is principally used as a semiconductor material for transistors. The first generation of semiconductors were based solely on germanium, then lower-cost silicon was used. Later, silicon-germanium alloys were developed. Due to its optical properties, germanium is used in fiber-optics, infrared optics and in solar cell applications.

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GENERAL PROPERTIES

Symbol:

Ge

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

Heat of Fusion:

8.3 Cal/gm mole

 

TYPICAL ANALYSES - Impurities in ppm

Material / Purity:

5N

6N
Fe 1.0 0.03
Na 1.0 0.002
Si 2.0 0.017

GERMANIUM ROD

Material

Purity                       

Germanium Rod .250"
5N, 6N
Germanium Rod .500"
5N, 6N

Rod is cut to order and sold by the inch. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional diameters or custom requirements.

GERMANIUM POWDER, PIECES, & INGOT

Material

Purity

Germanium Pieces -1mm 5N, 6N
Germanium Pieces 1-5mm 5N, 6N
Germanium Ingot 5N, 6N
Germanium Powder, -60 Mesh 3N, 5N
Germanium Powder, -325 Mesh 3N, 5N 

Powder, pieces, and ingots are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

GERMANIUM COMPOUNDS

Material

Purity

Germanium Oxide GeO2 -325 Mesh msds1 5N
Germanium Oxide GeO2 -40 Mesh msds1
5N
Germanium Oxide GeO2 Pieces 3-9mm msds1
5N

Compounds are packaged to order and sold by the gram or kilogram. Call or This email address is being protected from spambots. You need JavaScript enabled to view it. for additional specifications or custom requirements.

 

Material Safety Data Sheet - MSDS

Germanium MSDS

Germanium Powder MSDS

Technical Data Sheets
Understanding Mesh Sizes