Bismuth Bi powder CAS 7440-69-9

If you are looking for high-quality products, please feel free to contact us and send an inquiry, email:

About Bismuth Bi powder:
Bismuth is a silvery, crystalline, brittle metal when freshly produced and it often presents a pinkish tinge in the air. Bismuth is the most diamagnetic element, and its thermal conductivity is lower than any metal except mercury. It has a high electrical resistance and the highest Hall coefficient. Bismuth powder is a kind of spherical metal nanoparticle with colors from dark grey to black according to different particle sizes and there are no mixed colors or obvious agglomeration.
It has a high electrical resistance and has the highest Hall effect of any metal (that is, the greatest increase in electrical resistance when placed in a magnetic field). Bismuth is stable to oxygen and water but dissolves in concentrated nitric air. All bismuth salts form insoluble compounds when put into water.
 Feel free to send an inquiry to get the latest price if you would like to buy Bismuth Bi powder in bulk.
The most important ores of bismuth are bismuthimite and bismite. Bismuth occurs naturally as the metal itself and is found as crystals in the sulfides ores of nickel, cobalt, silver and tin. Bismuth is mainly produced as a by-product of lead and copper smelting, especially in the USA. The chief areas where it is mined are Bolivia, Peru’, Japan, Mexico and Canada, but only to the extent of 3.000 tonnes per year. There is no reliable estimate of how much bismuth is available to be mined, but it seems unlikely that there will ever be a shortage of this metal.

Specification of Bismuth Bi powder:

Bismuth powder Purity: 99.5% 

Bismuth powder CAS:7440-69-9

Bismuth powder EINECS: 231-177-4

Bismuth powder APS: 80 nm and as your request
Bismuth powder SSA: 1>7 m2/g
Bismuth powder Morphology: spherical
Bismuth powder Melting point: 271°C
Bismuth powder Boiling point: 1420-1560°C 








Bulk Density



Bismuth powder (Bi)



The impurities contain the elements of B, Al, Si, Cr, Mn, Fe, Ni,  Cu, Mo, W,P,C,S We can supply the specific MSDS if needed.



Dark Grey, Black




How is Bismuth Bi powder produced?
It is best to use freshly prepared α-Bi2O3 to produce bismuth powder by reducing it with a mixture of molecular hydrogen and atomic hydrogen at 270°C. It seems that a reduction reaction of α-Bi2 O 3→Bi has taken place without any intermediate phase being formed.
Bismuth powder can be also produced by such processes as the mechanical comminution of bulk bismuth, electrolysis of nitrate and sulfate solutions at high current densities, electrolysis of BiCl3 in methyl alcohol and glacial acetic acid, electrolysis of BiBr3 in molten A1Cl3, reduction of aqueous solutions of bismuth salts with various agents, and cathodic reduction of bismuth oxide.

Application of Bismuth Bi powder:
Bismuth Powder for use in the preparation of pressed and bonded sputtering targets and in Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low-Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Metallic-Organic and Chemical Vapor Deposition (MOCVD). Powders are also useful in any application where high surface areas are desired such as water treatment and in fuel cell and solar applications.
Bismuth metal is used in the manufacture of low melting solders and fusible alloys as well as low toxicity bird shot and fishing sinkers. Certain bismuth compounds are also manufactured and used as pharmaceuticals. The industry makes use of bismuth compounds as catalysts in manifacturing acrylonitrile, the starting material for synthetic fibers and rubbers.
Bismuth powder can be used as a lubricant additive: when added 0.1 to 0.3% of Bi nanoparticles to grease in the friction process, the friction surface will form a self-lubricating, self-laminating mask to protect the machine, which will significantly improve the grease performance.
Bismuth powder can be used in the metallurgical industry: can be used as additives during the production of cast iron, steel and aluminum alloy, which can improve the cutting performance of the alloy.
Bismuth powder can be used as magnetic materials: bismuth has a smaller thermal neutron absorption cross-section, lower melting point, and higher boiling point, which enable it to be the heat transfer medium used in a nuclear reactor. 

Storage Condition of Bismuth Bi powder:
The damp reunion will affect Bi powder dispersion performance and using effects, therefore, Bismuth Bi powder should be sealed in vacuum packing and stored in cool and dry room, the Bismuth Bi powder can not be exposure to air. In addition, the Bi powder should be avoided under stress.

Packing & Shipping of Bismuth Bi powder:
We have many different kinds of packing which depends on the Bismuth Bi powder quantity.
Bismuth Bi powder packing:vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Bismuth Bi powder shipping:could be shipped out by sea , by air, by express?as soon as possible once payment receipt.

Bismuth Bi powder CAS 7440-69-9插图

Bismuth Bi Powder Properties

Other NamesBismuth particles, Bismuth microparticles, Bi Powder, Bismuth Powder
CAS No.7440-69-9
Compound FormulaBi
Molecular Weight208.98
AppearanceFrom dark grey to black according to different particle sizes
Melting Point271.3 °C
Solubility in waterN/A
Density9.747 g/cm3
Particle Size80 nm and as your request
Boling point 1560 °C
Specific Heat0.0296 Cal/g/K @ 25 °C
Thermal Conductivity0.0792 W/cm/ K @ 298.2 K
Thermal Expansion(25 °C) 13.4 µm·m-1·K-1
Young’s Modulus32 GPa
Exact MassN/A
Monoisotopic MassN/A

Bismuth Bi Powder Health & Safety Information

Safety WarningWarning
Hazard StatementsH228
Flashing pointNot applicable
Hazard CodesF
Risk Codes11
Safety Statements16
RTECS NumberEB2600000
Transport InformationUN 3089 4.1/PG 2
WGK Germanynwg
Inquiry us