Molecular weight: 72.61
Product Description:Germanium is a rare metal, an important semiconductor material, insoluble in water. Zone melting germanium ingot is a kind of germanium ingot purified by zone melting method. The purity of the qualified product is over 99.9999%, the resistivity is over 47 oh.cm (23+/-0.5 degrees), the strip shape, trapezoidal cross section (26 mmB*21 mmT*23 mmL), the silver-gray metallic luster, the surface without cracks (polycrystalline pattern), the sticky slag, brittle, easy to break, the hardness is about 5.0, and the micro-conductivity belongs to the typical semiconductor. It is insoluble in hydrochloric acid, nitric acid and normal alkali, but soluble in HF, aqua regia and hot NAOH solution. It dissolves faster under the action of H202. The zone melted germanium ingot is a polycrystal with high purity, which is mainly used as raw material for the production of germanium single crystal.
Main applications:Ge has many special properties, and it has wide and important applications in semiconductor, aerospace measurement and control, nuclear physics detection, optical fiber communication, infrared optics, solar cells, chemical catalysts, biomedicine and other fields. It is an important strategic resource. In the electronic industry, in the alloy pretreatment, in the optical industry, it can also be used as a catalyst. China is the world's leading producer of germanium materials, with an annual output of more than 60 tons. Because it is mainly used to manufacture batteries on satellites and night vision devices on weapons and equipment, and its content on the earth is extremely scarce (according to the current development speed of germanium in China, germanium in China will be exhausted in about 50 years), developed countries will store and invest it as a strategic reserve material.