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Molecular formula : Bi2O3 CAS :
nature : rhomboidal yellow, yellow is the trigonal system and yellow three-axis chang metamorphosis. Rhomboidal. 8.9g/cm3 density. 820 ° C melting point. Boiling Point 1900 ° C Trigonal system are : density 8.55g/cm3. The temperature of 860 ° C. A conductor of electricity. Do not dissolve in water. Acid soluble. Be reduction of carbon and hydrogen. By bismuth nitrate heating system in decomposition. The system used metal bismuth, and the catalyst for the Department of bismuth oxide superconductors (such as the 1988 Japanese scholars synthesis of Bi-Sr-Ca-Cu-O superconductors).
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