Bismuth Oxide
Bismuth Trioxide, Dibismuth Trioxide, Bi2O3.
- CAS
- 1304-76-3
- EC
- 215-134-7
- Sectors
- Electronics & Solar PV
Bismuth Oxide (CAS 1304-76-3) is an inorganic compound supplied as a heavy, 99.9% pure yellow powder with strong dielectric and optical properties, and it serves as an eco-friendly alternative to lead in specialty glass, ceramics, and as a Technical Grade additive for varistors and capacitors. It is typically supplied as a 99.9% Pure yellow powder suitable for high-precision manufacturing.
This material serves as an eco-friendly alternative to lead in various industrial sectors, particularly in the production of specialty glass and ceramics. Its thermal stability ensures reliable performance in high-temperature soldering and metallurgical applications.
In the electronics sector, it is a vital Technical Grade additive for varistors and electronic capacitors. The compound’s low toxicity profile makes it a preferred choice for sustainable industrial development.
Typical Properties
| Molecular formula | Bi2O3 |
|---|---|
| Molecular weight | 256.98 g/mol |
| Appearance | Heavy, Yellow Powder |
| Form | powder |
| Color | Yellow |
| Odor | Odorless |
| Melting point | 820 °C |
| Boiling point | 1980 °C |
| Density | 9.37 g/cm³ (solid) |
| Water solubility | INSOLUBLE |
| Flash point | 1890°C |
| GHS signal word | Danger · Health hazard |
| HS code | 28259021 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Bismuth Oxide
Applications
- Ceramics & Glass: Used to enhance the refractive index and brilliance of optical glass and ceramic glazes.
- Battery Manufacturing: Acts as a stabilizer and additive in modern solid-state batteries and fuel cells.
- Chemical Catalysis: Employed as a catalyst for the oxidation of hydrocarbons in organic synthesis.
Safety & Risks
Classified as Non-Hazardous under standard GHS criteria but may cause Respiratory Irritation upon inhalation. Wear a Dust Mask (P2) and Safety Glasses during bulk powder transfer.
Packaging
Available in 25 kg fiber drums, 1 kg vacuum-sealed bags, and bulk IBC containers for industrial use.