Germanium dioxide CAS 1310-53-8;20619-16-3;157858-56-5 GeO2 Raw Earth
Germanium dioxide is the dioxide of germanium with the same electronic formula as carbon dioxide. It is a white powder or colorless crystal. There are two kinds of hexagonal crystal system (stable at low temperature) slightly soluble in water and orthorhombic crystal system insoluble in water. The transition temperature is 1033 ℃.
||6.239 g/mL at 25 °C
It is used in germanium production and electronic industry. Used as semiconductor material. It is prepared by heating and oxidation of germanium or hydrolysis of germanium tetrachloride. It can be used as raw material for the preparation of germanium and other germanium compounds, catalyst for the preparation of polyethylene terephthalate resin, spectral analysis and semiconductor materials. It can be used as catalyst for conversion, dehydrogenation, adjustment of gasoline fraction, production of color film and polyester fiber. Moreover, germanium dioxide is also a catalyst for polymerization. The glass containing germanium dioxide has high refractive index and dispersion performance, which can be used as a wide-angle camera and microscope lens. With the development of technology, germanium dioxide is widely used in the production of high-purity metal germanium, germanium compounds, chemical catalysts and pharmaceutical industry, PET resin, electronic devices, etc., and it should be noted that germanium dioxide Although its morphology is similar to that of organic germanium (Ge-132), it is toxic and should not be taken.
Germanium, with semiconductor properties. It plays an important role in the development of solid-state physics and solid-state electronics. The melting density of germanium is 5.32g/cm3. Germanium may be classified as a rare bulk metal. The chemical properties of germanium are stable. Germanium does not react with air or water vapor at room temperature, but it quickly generates germanium dioxide at 600-700 ℃. It does not work with hydrochloric acid or dilute sulfuric acid. When concentrated sulfuric acid is heated, germanium will dissolve slowly. Germanium dissolves easily in nitric acid and aqua regia. The effect of alkali solution on germanium is very weak, but the molten alkali in air can make germanium dissolve rapidly. Germanium doesn't work with carbon, so it melts in a graphite crucible and won't be polluted by carbon. Germanium has good semiconductor properties, such as electron mobility, hole mobility and so on.
We can customize according to customer's requirement.
If you have any question pls mail us or call us.