Bismuth oxide accept chicken orthorhombic system, chicken tetragonal arrangement and chicken cubic arrangement three abnormal. Orthorhombic system. Body 8.9 g/cm3. Melting point 820 ℃. Boiling point 1900 ℃. Tetragonal system: body 8.55 g/cm3. Melting point 860 ℃. Electric conductor. Baffling in water. Acrid in acid. Can be carbon and hydrogen reduction. The bismuth nitrate heating atomization system. For authoritative metal bismuth, catalysts and bismuth arrangement oxide superconductor (such as 1988 Japanese advisers constructed Bi - Sr - Ca - Cu - O superconductor).
Bismuth oxide is tasted a blazon of alpha and beta type. Alpha blazon for chicken monoclinic arrangement crystallization, about body 8.9, melting point 825 ℃, acrid in acid, baffling in baptize and alkali. Beta blazon for ablaze chicken to orange, tetragonal system, about body 8.55, melting point 860 ℃, acrid in acid, baffling in water. Easy to hydrogen, hydrocarbon and abridgement for metal bismuth.
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From: Mineral Salts
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