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Germanium 7440-56-4


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  • 7440-56-4

  • bosschemical

  • 7440-56-4

Germanium Basic information
Product Name: Germanium
CAS: 7440-56-4
MF: Ge
MW: 72.64
EINECS: 231-164-3
Mol File: 7440-56-4.mol
Germanium Chemical Properties
Melting point 937 °C (lit.)
Boiling point 2830 °C (lit.)
density 5.35 g/mL at 25 °C (lit.)
vapor pressure 0Pa at 25℃
storage temp. Flammables area
form powder
Specific Gravity 5.35
color Silver
resistivity 53000 μΩ-cm, 20°C
Water Solubility insoluble H2O, HCl, dilute alkali hydroxides; attacked by aqua regia [MER06]
Crystal Structure Cubic, Diamond Structure - Space Group Fd3m
Merck 134,419
Exposure limits ACGIH: TWA 0.5 ppm(2.5 mg/m3); Ceiling 2 ppm (Skin)
OSHA: TWA 3 ppm
NIOSH: IDLH 30 ppm(250 mg/m3); TWA 3 ppm(2.5 mg/m3); Ceiling 6 ppm(5 mg/m3)
Stability: Stable. Slightly soluble in strong acids. Incompatible with strong oxidizing agents.
LogP 4.14 at 20℃
CAS DataBase Reference 7440-56-4(CAS DataBase Reference)
NIST Chemistry Reference Germanium(7440-56-4)
EPA Substance Registry System Germanium (7440-56-4)



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