Bismuth Oxide Pellets (Bi2O3 Pellets）

Physical and chemical properties

Bismuth oxide, also known as bismuth trioxide, is an inorganic compound whose molecular formula is Bi2O3, melting point: 824 ℃, boiling point: 1890 ℃, molecular weight: 465.96, is one of the most important compounds of bismuth, although bismuth trioxide can be obtained from natural Bismuth (a mineral) is obtained, but its main source is usually a by-product of copper or lead smelting, or by burning bismuth directly (blue flame). Pure bismuth trioxide has α-type and β-type. The α-type of bismuth trioxide is a yellow monoclinic crystal, the relative density of bismuth trioxide is 8.9, and the melting point is 825 ° C. The bismuth trioxide is soluble in acid, and the bismuth trioxide is insoluble in water and alkali. Bismuth trioxide β-form is bright yellow to orange, tetragonal system. It is easily reduced to metal bismuth by hydrogen, hydrocarbons, etc.

Application

γ-Bi2O3 is a special material with a cubic fluorite-type structure. .

Mainly used in chemical industry (such as chemical reagents, bismuth salt manufacturing, etc.), glass industry (mainly used for coloring), electronic industry (electronic ceramics, etc.) and other industries (such as the manufacture of fireproof paper, nuclear reactor fuel, etc.). Among them, the electronics industry is the most widely used industry of bismuth oxide, mainly used in the fields of varistor, thermistor, zinc oxide arrester and kinescope. Due to its excellent optical properties, such as high refractive index, infrared transmission and nonlinear optics, bismuth oxide-based glass for optoelectronic materials is very attractive in material applications such as optoelectronic devices and optical fiber transmission.