Tellurium dioxide Pinyin: eryanghuandi English name: tellurium dioxide note: TeO2 a white crystalline powder. Odorless. The relative density of four crystal 5.66 (0 ℃). The relative density of the trapezoid crystal 5.91 (0 ℃). Melting point 733 ℃. Tetragonal structure, significant yellow heat, melt暗黄was red, as gender compounds, extremely difficult to dissolve in water, do not dissolve in ammonia, insoluble in strong acid and alkali. For determination of anti-corrosion and bacterial vaccine, etc.. Tellurium in the air by burning or by hot nitric acid oxidation. Boiling point 1260 ℃. 450 ℃ the beginning of sublimation, thermal decomposition of acid from the correct preparation. For anti-corrosion, such as identification of bacterial vaccine. For toxic substances. Mainly used for preparation of II-VI family compound
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