99.999Bismuth Oxide

Description

Bismuth (III) oxide is the important compound of Bismuth, compared with beta-Bismuth Trioxide, alpha Bismuth Oxide got more common used in the market which can be used as electronic materials, glass coloring materials, varistor, surge arresters, CRT, fireproof paper, nuclear reactor fuel, electronic etc.

The preparation of bismuth trioxide generally involves two processes: dry method and wet method. In the dry method, bismuth metal undergoes oxidation at high temperatures, reacting with oxygen in the air to produce bismuth trioxide. This method does not generate wastewater or waste, resulting in high purity bismuth trioxide. Our company mainly utilizes this process for production.

The wet method refers to chemical methods for preparing bismuth trioxide. There are various wet methods, but typically involve first converting bismuth metal into bismuth nitrate, followed by transformation into different bismuth salts. After a series of precipitation, crystallization, washing, filtration, heating, calcination, sieving, and grading steps, bismuth trioxide of varying purities and characteristics is obtained.

Product Name	Bismuth Oxide, Bismuth III Oxide, Bi2o3
Purity	99.999%
Size	1-5μm
Crystal Structure	Alpha & Beta
Molecular Formula	Bi2O3
Molecular Weight	465.96
Melting Point	820℃
Boiling Point	1890℃
CAS No.	12048-50-9
EINECS No.	215-134-4

 

Applications

• Electronic Materials: Ultrafine bismuth oxide powder is used in electronic components like ceramic capacitors, varistors, and piezoelectric ceramics. Adding bismuth oxide significantly improves related parameters and enhances component performance.

• Ferrite Magnetic Materials: Incorporating ultrafine bismuth oxide powder can enhance magnetic induction, permeability, and flux density, thereby optimizing the performance of magnetic materials.

• Catalysts in the Petrochemical Industry: Due to its large surface area, high activity, and good selectivity, bismuth oxide significantly increases catalytic activity, effectively reducing production costs. It is also used in related passivators and additives.

• Color CRT Shadow Mask Coatings: Bismuth oxide is used to effectively prevent shadow mask swelling. It is also used in automotive topcoat formulations to replace toxic metals, achieving green and environmentally friendly solutions.

• Glass and Ceramic Colorants and Glazes: Bismuth oxide is used as a coloring agent for glass and ceramics.

• High-Performance Materials: It is utilized in high-performance bismuth silicate single crystals, bismuth-based high-temperature superconductors, high-quality optical glasses, optical fibers, fireworks, new oxidation sensing materials, fuel cell electrolytes, rechargeable alkaline zinc-manganese batteries, flame retardants, and clarifiers.

• Green Flame Retardants: Bismuth oxide serves as an environmentally friendly flame retardant, replacing toxic antimony-based retardants.

• Additive for Environmentally Friendly Batteries: It improves battery performance when used as an additive in green batteries.

Bismuth oxide is primarily used in industries such as chemical, glass, and electronics. Among these, the electronics industry is the most extensive user of bismuth oxide, where it is applied in varistors, thermistors, oxide surge arresters, and cathode ray tubes.

Additionally, bismuth oxide exhibits fluorescent properties, inertness in water, high refractive index, and dielectric constant. It is a promising visible-light photocatalyst for degrading wastewater pollutants and can be used to produce catalysts like molybdenum-bismuth, yttrium-bismuth, and combustion rate catalysts.

Moreover, bismuth oxide can substitute lead in ceramic glazes and serves as an excellent ceramic coloring agent, plastic flame retardant, and glass additive. Nano bismuth oxide, besides sharing properties and applications with conventional particle-sized bismuth oxide powders, holds vast potential in optical materials, superconductors, and specialized ceramic materials.

Our Advantages

• Less content of heavy metals like Cu, Pb, As, Sb, Cd, Ni, Cr.
• Provide a complete set of test reports including CoA, PSD, SEM for each batch.
• Free Sample Support for preliminary test, secondary testing and triple test to verify the consistent quality of different batches.
• A variety of particle sizes can be selected, especially within the range of intervals, such as 2-4 micron.
• According to the low range of raw material cost, our quotation is calculated to save customer costs.
• Sealed package to prevent moisture and pollution.
• Technical support within 60 minutes by e-mail, calling or instant message.
• ISO9001 and ISO14001 certificated manufacturer.

Q&A

Q1: What are the primary industrial applications of alpha bismuth oxide (Bi2O3)?

A1: Alpha bismuth oxide is widely used in electronic materials, glass coloring, varistors, surge arresters, CRTs (cathode ray tubes), fireproof paper, nuclear reactor fuel, and various electronic components.

Q2: What are the two main processes used for the production of bismuth trioxide (Bi2O3)?

A2: The production of bismuth trioxide involves the dry method and the wet method. The dry method oxidizes bismuth metal at high temperatures using oxygen from the air, yielding high-purity Bi2O3 without generating wastewater. The wet method involves chemical conversion of bismuth metal into bismuth salts, followed by precipitation, crystallization, and other steps to obtain Bi2O3 of varying purities.

Q3: Why is the dry method preferred for producing bismuth trioxide in some industries?

A3: The dry method is preferred because it produces high-purity bismuth trioxide without generating wastewater or waste, making it more environmentally friendly and suitable for industries requiring high purity standards.

A4: What are the advantages of using bismuth oxide as a substitute for lead in ceramic glazes and other applications?

Q4: Using bismuth oxide as a lead substitute reduces environmental and health risks associated with lead exposure while maintaining or enhancing the functional properties of the materials, such as improving the quality of ceramic glazes and ensuring safety in consumer products.