Bismuth Trioxide

Bismuth trioxide (Bi2O3) is an inorganic compound with the molecular formula Bi2O3. Pure products have alpha and beta types. The alpha type is a yellow monoclinic crystal with a relative density of 8.9 and a melting point of 825 ℃. It is soluble in acid and insoluble in water and alkali; The beta type is bright yellow to orange, with a tetragonal crystal system, a relative density of 8.55, a melting point of 860 ℃, soluble in acid and insoluble in water.  

Bismuth trioxide (Bi2O3) is an inorganic compound with the molecular formula Bi2O3. Pure products have alpha and beta types. The alpha type is a yellow monoclinic crystal with a relative density of 8.9 and a melting point of 825 ℃. It is soluble in acid and insoluble in water and alkali; The beta type is bright yellow to orange, with a tetragonal crystal system, a relative density of 8.55, a melting point of 860 ℃, soluble in acid and insoluble in water.  

Bismuth trioxide is prepared via dry or wet methods. The dry method (our company’s choice) oxidizes bismuth metal at high temperatures with air, yielding high-purity bismuth oxide without wastewater/waste. The wet method converts bismuth to bismuth nitrate, then to bismuth salts, followed by precipitation, washing, calcination, etc., to get bismuth oxide of varied purities.