Bismuth oxide is yellow heavy powder or monoclinic crystal, which is odorless and stable in air. There are two types for pure bismuth trioxide, α type and β type. α-bismuth(III) oxide is yellow monoclini crystal with relative density 8.9 and melting point 825℃, which is soluble in acid, however not soluble in water and alkali. β-bismuth(III) oxide is bright yellow to orange tetragonal powder with relative density 8.55 and melting point860℃, which is soluble in acid, however not soluble in water. They can reduced to bismuth metal by hydrogen and hydrocarbon. Bismuth nitrate or bismuth metal is the raw material.
|CAS No.:1304-76-3||EINECS No.:215-134-7||Molecular Formula:Bi2O3||Molecular Weight:465.96|
|Density:8.9||Melting Point:825℃||Boiling Point:1890℃||Flash Point:1890℃|
Bismuth trioxide is raw material for catalysts, ceramic pigments and bismuth salts as bismuth chloride , bismuth vanadate , bismuth germanate , bismuth tungstate, sodium bismuthate, bismuth iodide and bismuth fluoride .