High Purity Bismuth Oxide Bi2O3 powder  CAS 1304-76-3,99.9% |

Bismuth oxide Bi2O3 Powder:
bismuth trioxide and bismuth oxide are inorganic compounds with the molecular Formula Bi2O3. The pure products are type A, type B, and type D. It has a bright yellow to orange intragenic color, with a relative mass of 8.55. The melting point is 860. It’s soluble in alkali and acid but not water. It can be reduced to bismuth by hydrocarbons and hydrogen. uses of bismuth dioxide include electronic ceramic materials, electrolyte material, photoelectric material, high temperature superconducting materials, and catalysts. Bismuth oxide plays an important role in electronic ceramic powders. Purity is usually required to be higher than 99.15%.
Bismuth Subcarbonate is formed by atmospheric carbon dioxide, or water-soluble CO2. Bismuth dioxide is a highly reactive alkaline oxide. This is why it reacts so readily with carbon dioxide. The reaction between carbon dioxide and bismuth is not triggered when an acidic silicate cation (Si(IV)) is added to the structure of bismuth.

Please send us a message to receive the latest Bismuth Oxide pricing, if you wish to purchase Bismuth Oxide Bi2O3 in bulk.

Performance and properties of Bismuth Oxide Bi2O3:

The pure trioxide of dibismuth has two types: a and b. The yellow monoclinic type a has a melting point 825, a relative density of 8.9, and is a yellow crystal. It is soluble only in water. The b-type has a yellowish orange color, cubic crystals, a relative densities of 8.55, melting points of 860, and is soluble only in acid. It can be easily reduced to metallic Bismuth using hydrogen, hydrocarbons etc.

Technical Parameters of Bismuth Oxide Bi2O3:

How are Bismuth Oxide (Bi2O3) powder manufactured?
1. Mix the solution by adding the sodium nitrate without the carbon dioxide. During the precipitation procedure, the solution remains acidic and the white, large-expanding Bismuth Oxide Hydrate Bi(OH3) is precipitated. The solution is heated and, after a brief time of stirring it, the yellow bismuth trioxide dehydrates. After washing with water, filtration, and drying, the bismuth trioxide was prepared.
2. Mix them by adding 1.5mol/L water solution of sodium hydroxide without carbon dioxide, to 0.1mol/L solution of bismuth-nitrate dissolved in 1mol/L acid nitric (at 8090), in an atmosphere of nitrogen. The solution stays alkaline throughout the precipitation. After stirring the hot solution, the white and expanding bismuth hydrate hydrate Bi (OH)3 dehydrates to light yellow bismuth Trioxide. The bismuth dioxide was obtained by washing and decanting with water 15 times without air or carbon dioxide, followed by filtering and drying.
3. Under the flow of oxygen and after the metal bismuth has been loaded into the crucible, an arc will form between the graphite and the metal liquid’s surface. This heats the metal and causes it to oxidize. For a sufficient oxygen supply, it is recommended that the crucible be placed inside a large vessel and continually supplied with oxygen. The reaction temperature ranges between 750-800 degrees and the purity is greater than 99.8%. After quenching it in water, or on a cool metal plate, you get the high-temperature b-type phase product.
4. It was made by placing aluminum in a boat and heating the air to 650K.
5. The NO3-ion will be removed after approximately 3 4 hours.
2BiONO3=Bi2O3+NO+NO2+O2
After cooling the product will turn lemon-yellow.
6. After washing the surface, remove the nitric-acid by using conductive water. Add 1:1 high purity nitric (35kg nitric, 1.42 RDH in 20L conductivity) acid. Finish with 1, and continue reaction for 10min. The filtrate is heated to 65-70 degrees Celsius, evaporated to a relative densities of 1.9 then cooled, crystallized and finally dried to produce bismuth oxide. Use the conductance water obtained from bismuth to dissolve the dilute solution. Hydrolysis was performed under stirring.

Application of Bismuth Oxide (Bi2O3 Powder)
Bismuth Salt is made from bismuth oxide.
As a high-temperature superconducting, electronic ceramic powder, electrolyte and catalyst, bismuth oxide can be used.
The main applications are zinc oxide varistors (ceramic capacitors), ferrite magnet materials (ferrite magnetic materials), as well as red glass complex, glaze rubber complex, medicine and other aspects.

Storage condition of Bismuth Oxide, Bi2O3 Powder:
Bismuth Oxide Bi2O3 Powder should be kept in a sealed container and stored in an area that is cool and dry. Also, ensure there are good ventilation devices or exhaust systems in the workplace.

Packing & Shipping Bismuth Oxide TeO2 Powder:
It comes in double plastic bags that can be filled up with argon using a vacuum.
Bismuth Oxide Bi2O3 – powder packaging: 100g, 500g, 1kg or 25kg per barrel, or your choice.
Bismuth oxide Bi2O3 Powder Shipping: could ship out by sea by air or by express as quickly as possible after payment receipt.


Technology Co. Ltd., () is an established global chemical material manufacturer and supplier with more than a decade of experience. They provide high-quality nanomaterials such as boride powders, graphite or sulfide particles, as well as chemicals.
We are happy to answer any questions you may have. (brad@ihpa.net)