Germane | CAS No. 7440-56-4

Germane

Basic Information

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CAS Number

7440-56-4

Molecular Formula

H4Ge

Molecular Weight

72.61 g/mol

Chemical Classification

Basic Chemical Raw Materials Inorganic Chemicals Acids

Basic Physical Properties

Melting Point

937 °C

Boiling Point

2830 °C

Density

5.35 g/mL at 25 °C

SMILES

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[Ge]

InChI

InChI=1S/GeH4/h1H4

InChIKey

QUZPNFFHZPRKJD-UHFFFAOYSA-N

LogP

-0.3808

Topological Polar Surface Area

0.0 Å²

Hydrogen Bond Donor/Acceptor

0 / 0

Complexity

Safety Information

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GHS Hazard Pictograms

H228

Hazard Statement

H228 Flammable solid
Flammable solids

Hazard Class

Class 8 Class 8

Stability

Stable. Slightly soluble in strong acids. Incompatible with strong oxidizing agents.

Sensitiveness

对湿度敏感

Synonyms & References

English

Germanium atomic absorption standard solution
germanium coating quality balzers
Germaniumpowdermesh
GermaniumpiecesNmm
Germaniumwafer
Germaniummeshpowder
GermaniumpowderNmesh
Germanium pieces
Germanium powder
Germanium
Germanium Optical Window
Germanium ingot
Germanium rod
GERMANE
Germanium ICP Standard
Germanium ICP Std.
1000μg
Cermanium powder
germanium atom
GERMANIUM METAL
GerManiuM Optical Window, 50.8MM (2.0in) dia x 2MM (0.08in) thick
Germanium standard
GERMANIUM:
germaniumelement
GE007910
GE007920
GE007930
GE003020
GE003131
GE003030
GE003122

MDL Number

MFCD00085310

FAQ

What are the physical and chemical properties of Germane (CAS: 7440-56-4)?

Germane (CAS: 7440-56-4) is a colorless, flammable gas with a molecular weight of 32.07 g/mol. It has a low solubility in water but is highly soluble in organic solvents. Germane is highly reactive, especially towards oxygen and moisture, and it forms germanium oxyacids when exposed to water. It exists as a monomer in the gaseous state and is often found in a crystalline form at low temperatures.

How is Germane (CAS: 7440-56-4) typically synthesized?

Germane is typically synthesized by reacting germanium tetrachloride (GeCl4) with hydrogen gas (H2) in the presence of a catalyst, such as germanium dioxide (GeO2). The reaction is highly exothermic and selective, yielding germane with a high yield. The exact conditions, such as temperature and pressure, are critical for the success and efficiency of the synthesis.

What industries use Germane (CAS: 7440-56-4)?

Germane is used in various industries, including semiconductor manufacturing, where it serves as a precursor for the deposition of germanium films on silicon wafers. It is also utilized in the production of germanium compounds for optical applications, in the synthesis of organic germanium compounds for pharmaceuticals, and as a component in some gas sensors.

What precautions should be taken when handling Germane (CAS: 7440-56-4)?

When handling Germane (CAS: 7440-56-4), it is essential to use appropriate personal protective equipment (PPE), including respiratory protection and safety gloves. Work should be conducted in a fume hood to minimize exposure. Spills should be cleaned up carefully, and the area should be well-ventilated. Safety data sheets (SDS) should be consulted for detailed emergency procedures and safe handling practices.