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|Cas No:||1310-53-8||EINECS No:||215-180-8|
1. Appearance:: white powder or colorless crystallization2, density (g/cm3, 20 C): 6.239
2. Relative density (g/mL, air =1): 4.228
3, melting point (S. C): 1115 - 4
4, index of refraction (n20/D): 1.99
5, Solubility:does not dissolve in water, dissolve in alkali to generate germinate salts.
It is used in the manufacture of germanium and also in the electronics industry.
Used as a semiconductor material.
It is oxidized by germanium or hydrolyzed by germanium chloride.
It is used as a catalyst for the preparation of metal germanium and other germanium compounds, as well as for the preparation of Polyterephthalate two ester resin, as well as spectroscopic analysis and semiconductor materials.
It can make optical glass phosphors, and can be used as catalysts for oil conversion, hydrogen removal, gasoline fractionation adjustment, color film and polyester fiber production. Not only that, the catalyst two or the polymerization of GeO2, refractive index and dispersion properties of high germanium containing two glass, can be used as a wide-angle camera and microscope lens, with the development of technology, the two is widely used in the production of high purity germanium germanium and germanium compounds, chemical catalyst and pharmaceutical industry, PET resin, electronic devices etc. Two, note that although the morphology of organic germanium and germanium oxide (Ge-132) is similar, but it is toxic, can not take.
Germanium, which has the properties of semiconductors. is more important for the development of solid physics and solid electronics. Germanium melt density of 5.32 g / cm 3, germanium possibility under the scattered metal germanium, stable chemical properties under normal temperature with air or steam, but at 600~700 DEG C, quickly generate two germanium. It does not work with hydrochloric acid and dilute sulfuric acid. When the concentrated sulfuric acid is heated, the germanium will dissolve slowly. In nitric acid, germanium is easy to dissolve. The effect of alkali solution and germanium is very weak, but the molten alkali in the air can dissolve the germanium rapidly. Germanium and carbon do not act, so they melt in the graphite crucible and are not contaminated by carbon. Germanium has good semiconductor properties, such as electron mobility, hole mobility, and so on.
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