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Germanium Dioxide

Germanium Dioxide, also called Germanium Oxide and Germania, is an inorganic compound, an oxide of germanium. It forms as a passivation layer on pure germanium in contact with atmospheric oxygen.

  • Order(MOQ):

    500kg
  • Product Origin:

    China
  • Shipping Port:

    China main port
  • Product Detail

Germanium Dioxide
Molecular formula GeO2
Molar mass 104.61 g/mol
Appearance white powder or colourless crystals
Density 3.64 g/cm3
Melting point 1115°C
Boiling point 1200°C
Solubility in water 5.2 g/l (25 °C)


High Quality Germanium Dioxide Specification

Item No.
Chemical Component
GeO2≥% Foreign Mat.≤%
As Fe Cu Ni Pb Ca Mg Si Co In Zn Al Total Content
UMGD5N 99.999 1.0*10-5 1.0*10-4 1.0*10-4 1.0*10-5 1.0*10-5 1.0*10-4 1.0*10-4 1.0*10-4 1.0*10-5 1.0*10-5 1.0*10-4 1.0*10-4 1.0*10-3
UMGD6N 99.9999 1.0*10-5 1.0*10-5 1.0*10-6 1.0*10-6 1.0*10-6 1.0*10-5 1.0*10-5 1.0*10-5 1.0*10-6 1.0*10-6 1.0*10-5 1.0*10-5 1.0*10-4

Packing: neutral carton, Specification: Φ34 ×h38cm, with double-layer plastic bag lining , Net wt. 20Kg.


What is Germanium Dioxide used for?

  For the refractive index and optical dispersion properties, Germanium dioxide is useful as an optical material for wide-angle lenses and in optical microscope objective lenses. 

  Mixture of silicon dioxide and germanium dioxide ("silica-germania") is used as an optical material for optical fibers and optical waveguides. 

  Germanium dioxide is also used as a catalyst in production of polyethylene terephthalate resin, and for production of other germanium compounds. It is used as a feedstock for production of some phosphors and semiconductor materials.




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