CAS #: 7440-56-4
Linear Formula: Ge
EC No.: 231-164-3
Germanium Metal is chemically stable and does not react with air or water vapor at normal temperature, but it generates GeO2 very quickly at 600-700 °C. Does not work with hydrochloric acid or dilute sulfuric acid. When concentrated sulfuric acid is heated, helium will dissolve slowly. In nitric acid and aqua regia, it is easily dissolved. The action of the alkaline solution and hydrazine is weak, but the molten alkali is in the air and can dissolve the hydrazine quickly. Germanium and carbon do not work, so they melt in the graphite crucible and are not contaminated by carbon.
Product Series
Product | Product Code | Safety Data | Technical Data |
Germanium Metal 99.9% | ET-GeM-01 | ![]() | ![]() |
Germanium Metal 99.99% | ET-GeM-02 | ![]() |
Properties (Theoretical)
Molecular Weight | 72.61 |
Appearance | Black Lump |
Melting Point | 937.4 °C |
Boiling Point | 2830 °C |
Density | 5.323 g/cm3 |
Electrical Resistivity | microhm-cm @ 20 °C |
Electronegativity | 1.8 Paulings |
Heat of Fusion | 8.3 Cal/gm mole |
Heat of Vaporization | 68 K-cal/gm atom at 2830 °C |
Poisson's Ratio | 0.26 |
Specific Heat | 0.077 Cal/g/K @ 25 °C |
Tensile Strength | N/A |
Thermal Conductivity | 0.602 W/cm/K @ 302.93 K |
Thermal Expansion | 6.0 µm/(m·K) |
Vickers Hardness | N/A |
Young's Modulus | 103 GPa |
Health & Safety Information
Signal Word | N/A |
Hazard Statements | N/A |
Hazard Codes | N/A |
Precautionary Statements | P261-P305 + P351 + P338 |
Flash Point | Not applicable |
Risk Codes | N/A |
Safety Statements | N/A |
RTECS Number | LY5200000 |
Transport Information | NONH |
WGK Germany | 3 |
Packaging Specifications
Finished packaging: 50 kg / barrel, 500 kg / tray
Sample packaging: 500 g / bag, 1 kg / bottle
Application
It has many special properties and is widely used in semiconductor, aerospace measurement and control, nuclear physics detection, optical fiber communication, infrared optics, solar cells, chemical catalysts, biomedicine, etc. It is an important strategic resource. . In the electronics industry, in the alloy pretreatment, in the optical industry, it can also be used as a catalyst.
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