The Applications of Bismuth Oxide

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Bismuth Oxide Powder


The most popular bismuth compound is the Bi2O3 Bismuth Oxide Powder. It is a functional material with advanced Functional properties that has exceptional dielectric and oxygen fluidity.

There are two types of pure bismuthtrioxide: a and b. Yellow monoclinic crystal of the a type has an 8.9 relative density and a melting points of 825degC. Solventible in acids, but insoluble when alkali is added. Bright yellow to orange cubic crystal, relative density 8.55, melting temperature 860degC. Soluble in acids but insoluble when water. This can be easily reduced to metallic Bismuth using hydrogen and hydrocarbons.

Here are some of the key features

Bismuth Oxide powder

Bismuth dioxide is an essential ingredient in electronic ceramic material. Its purity must be at least 99.15%. Main application objects include zinc oxide varistor, ceramic capacitor and ferrite magnetic materials.

Water-soluble or atmospheric carbon dioxide can react easily with bi2O3 to make bismuthsubcarbonate. Bismuth dioxide is an alkaline oxide which accounts for its high reactivity to carbon dioxide. However, if Si(IV), an acidic compound, it does not result in the formation of carbon dioxide. The concentration of sodium hydroxide, bromine, or a mixture thereof with potassium hydroxide is what forms bismuth (III).

Bismuth Oxide Properties

Other Titles
Bismuth trioxide (Bi2O3) powder


Compound Formula

Molecular Weight

Powder in light yellow

Melting Point
817 degC

Boiling Point
1890 degC

8.9 g/cm3

Solubility of H2O

Exact Mass

Bismuth Oxide Bi2O3 powder CAS 1304-76-3

Bismuth Oxide powder uses

Useful for making bismuth sodium salt. Also used in electronic ceramic materials, as photoelectric material, electrodelyte material or high-temperature superconducting material, and as catalyst. A purity level of 99.15% is required for bismuth dioxide, which is used as an additive in electronic ceramics powder materials. Zinc oxide varistors, ceramic capacitors and ferrite magnet materials are the main uses. Glaze rubber compounding agent is also used, as medicine compounding agent, red glass compounding agents, etc.

It is used extensively in electronics, chemicals, glass, plastic, ceramic glaze, and other industries such as catalysts, electronic ceramic powder, magnet materials magnetic materials high-temperature superconducting material, metal materials, photoelectric materials.

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Bismuth Oxide powder

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