Tellurium

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Tellurium
Posting date : Apr 15, 2010
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29-
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Property : Silver gray substance, insoluble water & non-oxidized acid. Insoluble in nitric acid, strong vitriol & hot strong alkali solutions. Tellurium, a kind of dissipated element, Tellurium and its chemical compound are semiconductor material in electronic industry. TeO2, an oxide of tellurium, is formed by tellurium’s bumping in the air or oxidation lf hot nitric acid. Usage : High quality materials to manufacture photo electricity and thermoelectricity parts, Widely used in metallurgy, electric, chemical, pharmaceutical, aerospace. National defense industry, especially used in high tech fields, such as computer, Ir. Remote sensing, military technology etc. It is also a vulcanizing agent of rubber and used for material of making the light sensitive resistor and light-sensitive battery. Index Item Refernce Value(%) Test Value(%) Te 99.99 Min 99.99 Min Cu 0.001 Max 0.0005 Max Pb 0.002 Max 0.0005 Max Fe 0.001 Max 0.000835 Max Bi 0.001 Max 0.000758 Max Na 0.003 Max 0.00104 Max Mg 0.001 Max 0.0005 Max Al 0.001 Max 0.0005 Max Se 0.002 Max 0.00131 Max As 0.0005 Max 0.0005 Max S 0.001 Max 0.0005 Max Si 0.001 Max 0.000666 Max

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