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Bismuth(III) Oxide CAS 12048-50-9
Product Name: BISMUTH(III) OXIDE
Synonyms: BISMUTH(+3)OXIDE;BISMUTH(III) OXIDE V;BISMUTH OXIDE; bismuthoxide(bio2); BismuthTetraoxide;BISMUTHROXIDE; bismuth(IV) oxide
CAS: 12048-50-9
MF: Bi2O3
MW: 465.96
EINECS: 215-134-7
Product Categories: BISMUTH, INORGANIC CHEMICAL

 

Bismuth Trioxide (Bi2O3) consists of yellow hexagonal crystal system, cubic crystal system and equiaxial crystal system. Bismuth Trioxide is insulate, soluble to water but insoluble to acid. It can be obtained by decomposing bismuth nitrate under heat and can be reduced bismuth by hydrogen and carbon.
Properties of the yellow system:
Density :8.9 g/cm3 
Melting point of 820°c
Boiling point of 1890°c. 
Molecular weight:465.96 with 10.3 percent of O and 89.7 percent of Bi.
Properties of the cubic system:
Density:8.55 g/cm 
Melting temperature :860°c.

There are two types of purified three bismuth oxide: α-type and β-type. α- type belongs to yellow single hexagonal crystal system with the density of 8.9 g/cm and melting point of 825°c. It is soluble to acid, but not to water and alkali. The β-type with the color of bright to orange belongs to cubic crystal system . Its relative density is 8.55 g/cm with the melting temperature of 860°c. It is soluble to acid, but not to water, and likely to be reduced to metal bismuth by H and hydrocarbon.
Applications:
Raw materials for use in making metal bismuth, catalyst, and Bi-system oxide superconductor.

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