Bismuth Trioxide (Bi₂O₃)

Bismuth Trioxide (Bi₂O₃) is an inorganic material characterized by high density, high refractive index, and excellent electrical properties.

It is widely used in electronic materials, ceramics, glass, and polymer additives, and is attracting attention as a lead-free functional material.

We supply high-purity products in the range of 4N to 6N (99.99% to 99.9999%).

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Features

Applications

Specifications

Property	Value
Chemical Name	Bismuth Trioxide
Chemical Formula	Bi₂O₃
CAS No.	1304-76-3
Crystal Form	α / β
Purity	99.99% / 99.999% (4N–6N available)
Density (Tapped)	2.0 – 3.5 g/cm³
Melting Point	817°C
Boiling Point	1890°C
Specific Surface Area	0.9831 m²/g
Thermal Expansion Coefficient	5.89 × 10⁻⁶ /°C (at 101°C)
Particle Size (D50)	1–5 μm / 5–15 μm / 15–25 μm