Germanium Oxide (GeO2)-Powder

Characteristic

Germanium dioxide, also called germanium oxide, germania, and salt of germanium, is an inorganic compound with the chemical formula GeO₂. It is the main commercial source of germanium. It also forms as a passivation layer on pure germanium in contact with atmospheric oxygen.

Chemical formula：GeO₂

Molar mass：104.6388 g/mol

Appearance：white powder or colourless crystals

Density：4.228 g/cm³

Melting point：1,115 °C (2,039 °F; 1,388 K)

Solubility in water：4.47 g/L (25 °C)

                             10.7 g/L (100 °C)

Solubility：soluble in HF,

                 insoluble in other acid and alkali

Magnetic susceptibility (χ)：−34.3·10⁻⁶ cm³/mol

Refractive index (nD)：1.650

Crystal structure：hexagonal

Application

Used as raw materials for the manufacture of metallic germanium and other germanium compounds, as catalysts for the manufacture of polyethylene terephthalate resins, as well as for spectral analysis and semiconductor materials.