High Purity Bismuth Bi powder cas 7440-69-9, 99%

Description of Bismuth Powder :

Bismuth powder is usually silver-white or off-white with a metallic luster. Depending on the specific preparation process, its shape can be spherical, cube, diamond, etc.. Generally, the finer the particle size and the larger the specific surface area, the better the physical and chemical properties of bismuth powder. 

The density of bismuth powder is about 9.7g/cm3. Porosity refers to the percentage of pores in the total volume of bismuth powder, which affects the hygroscopicity, electrical conductivity, and plasticity of bismuth powder. Bismuth powder has high stability to air, water, alkali, and other substances at room temperature. It is not easily oxidized or chemically reactive with these substances. Bismuth has good corrosion resistance and is not easily affected by the atmosphere and certain chemicals. It has a good resistance to corrosion against sulfuric acid, nitric acid, hydrochloric acid, and other acids. It is also toxic, and excessive inhalation or ingestion may lead to poisoning. Therefore, when producing and using bismuth powder, safety measures must be taken to avoid human contact and inhalation.

Application of Bismuth Powder :

Electronics Industry: 

The application of bismuth powder in the electronics industry is mainly an additive in solder and electronic paste. These pastes manufacture electronic components such as circuit boards, conductors, and resistors. By adding bismuth powder, electronic paste's electrical conductivity and stability can be improved to ensure electronic components' manufacturing quality and reliability. In addition, bismuth powder can also be used as the main component of conductor paste for the preparation of thin film integrated circuits and hybrid integrated circuits. 


Bismuth powder can be used as one of the alloying elements in superalloys to improve the strength, corrosion resistance, and high-temperature stability of alloys. Especially in the aerospace field, bismuth alloy is extensively employed in manufacturing engines for aircraft, rocket engines, and other high-temperature equipment. In addition, bismuth alloy can also be used in the manufacture of high-temperature bearings, gears, and other key components. 

Catalyst preparation: 

Bismuth powder can be used as a catalyst in petroleum cracking, ammonia synthesis, hydrogen production, and other industrial production. As a catalyst carrier, bismuth powder can improve the activity and selectivity of the catalyst. In addition, Bismuth powder is also employed as an adjunct to the homogeneous catalyst to enhance the stability and efficiency of the catalyst.

Optical coating: 

Bismuth powder can be used as a high refractive index material in the field of optical coating for the preparation of optical components and optical systems. By coating a bismuth film on the surface of glass or other materials, the reflectivity and transmittance of light can be significantly increased, thus improving the performance of optical systems. 

Medical field: 

Bismuth powder has some special applications in the medical field. For example, bismuth powder can be used for medical implants, such as artificial joints, dental plants, etc. Because bismuth has good biocompatibility and corrosion resistance, it can be well combined with human tissues, reducing the risk of rejection and infection. In addition, bismuth can also be used to prepare drug carriers and drug slow-release materials for the treatment of major diseases such as tumors and cancers.

 Bismuth bi powder specifications:   







The color of the sky

Bulk Density



Bismuth powder (Bi)



You will find impurities that contain elements such as B, Al and Si, Cr. Mn, Fe. Ni, Cu. Mo, W.P.C.S. We are able to supply specific MSDSs if required.



Dark Grey or Black




Production Method of Bismuth Powder :   

Physical law: 

The physical method is a method to prepare bismuth powder from bismuth material by mechanical grinding, grinding, and other physical means. The method mainly includes ball milling, crushing, grinding, etc. 

The ball milling method is to put the bismuth raw material into the ball mill, add an appropriate amount of the grinding medium (such as zirconia, alumina, etc.), grind at a certain speed for a certain time so that the bismuth raw material is broken into fine particles. 

The crushing method is to put the bismuth raw material into the crusher, add an appropriate amount of grinding medium (such as diatomaceous earth, glass beads, etc.), and crush it for a certain time at a certain speed so that the bismuth raw material is broken into fine particles. 

The grinding method is to put the bismuth raw material into the grinder, add an appropriate amount of grinding agent (such as alumina, silicon carbide, etc.), and grind at a certain speed for a certain time so that the bismuth raw material is ground into fine particles. 

Chemical method: 

The chemical method is the method of converting bismuth raw material into bismuth powder by chemical reaction. Commonly used chemical methods are electrolysis, hydrogen reduction, and REDOX method. 

The electrolysis method is to electrolyze an aqueous solution containing bismuth ions with a current in an electrolytic cell. This causes the bismuth ions to discharge on the cathode and form bismuth powder. The advantages of this method are high production efficiency, low environmental pollution, and high production cost. 

The hydrogen reduction method uses hydrogen to reduce bismuth oxide or bismuth-containing raw materials under high temperatures and pressure to produce bismuth powder. The advantages of this technique include lower production costs and less environmental toxicity. 

REDOX method is the reaction of bismuth oxide or bismuth-containing raw material with carbon or reducing agent at high temperature to produce bismuth powder. This method's benefits are lower production costs and less environmental pollution, but attention should be paid to controlling reaction conditions and purity.

Prospect Market of Bismuth Powder :  

First, the use of bismuth powder in the electronics industry is growing. As an important raw material of electronic paste and solder, bismuth powder has become increasingly prominent in the electronics industry. With the rapid development of the electronics industry and the continuous innovation of electronic information technology, the demand for bismuth powder in the electronics industry will continue to grow. 

Secondly, applying bismuth powder in the field of superalloy also has broad prospects. Bismuth is widely used to prepare superalloys because of its excellent high-temperature properties and corrosion resistance. With the continuous development of aerospace, energy, and other fields, the demand for superalloy materials will also increase, driving the market demand for bismuth powder. 

In addition, the application of bismuth powder in catalyst preparation, optical coating, medical treatment, and other fields has also shown a good development trend. With the continual technological advancement and ever-growing array of applications, the demand for bismuth powder in these fields will continue to grow. 

At the same time, the state's support for environmental protection and new energy will also bring new development opportunities for the bismuth powder industry. With the rapid development of new energy batteries, solar cells, and other industries, the demand for high-performance, high-stability battery materials continues to increase; bismuth powder as an excellent battery material will also usher in new development opportunities.

Bismuth Powder Storage Conditions:   

 A damp reunion could affect Bi powder's dispersion and use performance. Bismuth Bi should be stored in vacuum bags and kept dry. Bismuth Bi must not be exposed to the air. Additionally, it is important to avoid stressing the Bi powder.  
Packing & Shipping Bismuth Bi-Powder:  
 We offer many packing options that are dependent on the Bismuth Bi Powder quantity.  
 Bismuth Bi powder packaging: vacuum packing 100g to 500g, or 1kg/bag at 25kg/barrel. Or as you request.  
 Bismuth Bi-powder shipping: can be shipped by sea or air as soon after receipt of payment.  
 Robocup2009 advanced materials Nano Technology Co. Ltd.  
 We are happy to help you find high-quality bismuth products. Please contact us for more information. (sales5@nanotrun.com)

Bismuth Powder Properties    

  Other Titles   Bismuth particle, Bismuth microparticles. Bi Powder. Bismuth Powder
  Compound Formula   Bi
  Molecular Weight   208.98
  Appearance   You can choose from black to dark grey depending on different particle sizes
  Melting Point   271.3 degC
  Solubility In Water   N/A
  Density   9.747 g/cm3
  Purity   99.50%
  Particle size   You can request 80 nm
  Boling Point   1560 degC
  Specific Heat   0.0296 Cal/g/K @ 25 degC
  Thermo Conductivity   0.0792W/cm/K @ 299.2 K
  Thermal Expansion   (25 degC) 13.4 um*m-1*K-1
  Young's Module   32 GPa
  Exact Message   N/A
  Monoisotopic   N/A

Bismuth Bi powder Safety & Health Information    

  Safety Notice   Alert
  Hazard Statements   H228
  Flashing Point   Non applicable
  Hazard Codes   F
  Risk Codes   11
  Safety statements   16
  RTECS #   EB2600000
  Transport Information   UN 3089 4.1/PG2
  WGK Germany   nwg

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