CAS 1304-82-1 Bismuth Telluride - Materials / Alfa Chemistry

NAVIGATION

Bismuth Telluride

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Catalog Number

ACM1304821-3

CAS Number

1304-82-1

Product Name

Bismuth Telluride

Category

Chalcogenides

Molecular Weight

800.76g/mol

Molecular Formula

Bi2Te3

Melting Point

586 °C

Purity

99.5%

Density

7.85 g/cm³

Solubility

Insoluble in Water

Application

Bismuth telluride serves a critical purpose in the development of thermoelectric devices, particularly those operating at room temperature, due to its exceptional properties as a semiconductor. This gray crystalline solid is renowned for its ability to convert temperature differences directly into electrical voltage and vice versa, making it a key material in achieving significant thermoelectric efficiency, with ZT values reaching up to 2.4. Its unique characteristics, such as a specific gravity of 7.7 and a melting point of 573°C, along with its safety profile-rated as moderately hazardous in terms of health, flammability, and reactivity-underscore its utility and practicality in advanced material science applications. Although insoluble in water, bismuth telluride's utility is enhanced through doped variations, often containing additional compounds like stannous telluride, to optimize performance for commercial thermoelectric systems.

Average Particle Size

<70µm

Chemical Formula

Bi2Te3

Color/Form

Gray

Form

Powder

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