China Factory Supply Bi203 Medicine Grade Bismuth Trioxide Granular/ Bismuth Oxide Needle Shape/Powder USP/Bp/Ep, Find details about China Bismuth Trioxide Granular, Needle Shape Bismuth Trioxide from Factory Supply Bi203 Medicine Grade Bismuth Trioxide Granular/ Bismuth Oxide Needle Shape/Powder USP/Bp/Ep
Name: Bismuth oxide
Molecular formula: Bi2O3
Molecular weight: 465.96
CAS no. : 1304-76-3
The physical and chemical properties
Bismuth oxide, also known as bismuth trioxide, is a yellow powder, insoluble in water, soluble in strong acids to form bismuth (III) salts.Melting point 824°C, boiling point 1890 °C.It is one of the most important compounds of bismuth and can be reduced to metallic bismuth by hydrogen.Although bismuth trioxide can be obtained from a natural bismuth bloom (a mineral), its main source is usually a by-product of copper or lead smelting. Bismuth trioxide is obtained by burning bismuth powder in air.
Phase type
There are 4 main crystal phases and 2 non-stoichiometric phases of Bi2O3. The 4 main crystal phases are monoclinic phase (-bi2o3), square phase (-bi2o3), volume cubic phase (-bi2o3), and surface cubic phase (-bi2o3). The non-stoichiometric phases are bi2o2.33 and bi2o2.75.Delta and delta phases are stable phases at low temperature and high temperature respectively, while other phases are metastable phases at high temperature.
Use profile
Mainly used in fireworks industry, chemical industry (such as chemical reagent, bismuth salt manufacturing, etc.), glass industry (mainly used for coloring), electronic industry (electronic ceramics, etc.), welding, magnetic materials, etc.Among them, the electronic industry is the most widely used bismuth oxide industry, mainly used in varistor, thermistor, oxide arrester and picture tube and other fields.In addition, Bi2O3 has a high refractive index and dielectric constant, significant fluorescence characteristics and inertness.Therefore, Bi2O3 is a potential visible light catalyst for water decomposition and pollutant degradation.
Needle Shape Bismuth Trioxide
Description:Yellow heavy powder.Average particle size is 2 0-4.0 u m,density 1.1~2.1g/cm3,the crystal structure shows the isometric crystal form.
Test | Specification |
Na20 | ≤60ppm |
Fe203 | ≤50ppm |
(Cu) Copper | ≤5ppm |
(Pb) Lead | ≤5ppm |
(A1) Aluminum | ≤5ppm |
(Ag) Silver | ≤5ppm |
Loss on dry | ≤0.5% |
Content of Bi203 | ≥99.5% |
Granular Bismuth Trioxide
Description:Yellow heavy granule,dissolve in acid,undissolved in water. It becomes orange red after heating,melting point:825ºC
Test | Specification |
Na20 | ≤100ppm |
Fe203 | ≤50ppm |
(Cu) Copper | ≤5ppm |
(Pb) Lead | ≤5ppm |
(Aq) Silver | ≤30ppm |
Loss on dry | ≤0.5% |
Mesh(45um) | ≤50% |
Content of Bi203 | ≥99.5% |
Ordinary Bismuth Trioxide
Description:Yellow heavy powder,dissolve in acid,undissolved in water.It becomes orange red after heating,melting point:825ºC.
Test | Specification |
Na20 | ≤100ppm |
Fe203 | ≤50ppm |
(Cu) Copper | ≤5ppm |
(Pb) Lead | ≤5ppm |
(Ag) Silver | ≤30ppm |
Loss on dry | ≤0.5% |
Content of Bi203 | ≥99.5% |
Packing&shipping
| Small quantity | Aluminium bag, inside two level plastic bags(1KG or less/Aluminium bag) |
| Bulk quantity | 25kg/drum, inside two level plastic bags |
| Others | can do your package or split small packages according to your request |
@ Moisture-proof Plastic Bags @ Aluminum Foil Bag @ 5KG/10KG/25KG/45KG/180kg Drums |
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Shipping:
@ By Courier: Fedex, EMS, DHL, TNT, UPS, etc. 7-10 days product will reach you after payment received, if it's agreed as ready stock before order.
@ By air, airport to airport
@ By sea
Our service
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