CAS 1304-82-1 Bismuth(III) telluride - Materials / Alfa Chemistry

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Bismuth(III) telluride

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Catalog Number

ACM1304821-1

CAS Number

1304-82-1

Product Name

Bismuth(III) telluride

Structure

Category

Thermoelectric Materials

Application

Bismuth(III) telluride is designed for use in semiconductor applications, specializing in thermoelectric cooling and power generation. As a gray or black crystalline solid, it is often employed in commercial settings where it is enhanced with selenium sulfide to modify its conductivity. This compound, with a molecular weight of 800.83 and specific gravity of 7.7, melts at 573°C. Though its vapor pressure is 0 mmHg at 20°C, indicating stability at room temperature, it features a balanced hazard profile with health, flammability, and reactivity ratings of 2. Common commercial formulations typically contain a mix that can include up to 80% bismuth telluride and 20% stannous telluride, with some tellurium. Regardless of whether it is doped or undoped, it remains insoluble in water and maintains similar physical properties, making it a versatile material for advanced technological applications.

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