Antimony(III) telluride
Antimony(III) telluride (Sb₂Te₃, CAS: 1327-50-0) is a semiconductor material with a molecular weight of 626.32 g/mol. It is recognised as a key component in high-performance thermoelectric devices, particularly for applications operating at room temperature. Its composition and properties contribute to significant thermoelectric figure of merit (ZT) values, making it valuable in advanced materials science and energy conversion technologies.
- IUPAC
- Antimony sesquitelluride,Antimony telluride,Diantimony tritelluride
- Synonyms
- Antimony sesquitellurideAntimony tellurideDiantimony tritelluride

Thermoelectric Materials
Antimony(III) telluride is a fundamental constituent of advanced thermoelectric materials. It contributes to achieving high ZT values, essential for efficient energy conversion in devices operating near room temperature.
Alternative Energy
As a critical element in thermoelectric generators and coolers, Sb₂Te₃ plays a role in developing sustainable energy solutions and waste heat recovery systems.
Materials Science Research
This compound serves as a valuable material for research into chalcogenides and their unique electronic and thermal properties, driving innovation in solid-state physics and materials engineering.
| Molecular weight | 626.32 |
|---|---|
| Linear formula | Sb2Te3 |
| Assay | ≥99.99% |
| Density | 6.5 g/mL at 25 °C(lit.) |
| Application | Sb2Te3, along with Bi2Te3 and other structurally analogous semiconductors, is widely regarded as one of the best materials for room temperature thermoelectric devices. Antimony(III) telluride is a key component of thermoelectric materials that have reached ZT values as high as 2.4 at room temperature. |


Hazard statements
- H302Harmful if swallowed
- H332Harmful if inhaled
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P273Avoid release to the environment
| Transport (UN / ADR) | UN 1549 6.1 / PGIII |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn,N |
| Risk statements (R) | 20/22-51/53 |
| Safety statements (S) | 61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Antimony(III) telluride used for?
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Antimony(III) telluride is primarily used in the development of thermoelectric materials for devices that convert heat into electricity or vice versa, with significant applications in alternative energy and materials science research.
What is the CAS number and chemical formula for Antimony(III) telluride?
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The CAS number for Antimony(III) telluride is 1327-50-0, and its chemical formula is Sb₂Te₃.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Antimony(III) telluride with an assay of ≥99.99%. We do not represent this product as USP, BP, or EP grade.
How should Antimony(III) telluride be handled?
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Antimony(III) telluride is harmful if swallowed or inhaled and is toxic to aquatic life with long-lasting effects. Handle with appropriate personal protective equipment in a well-ventilated area, and avoid release into the environment.
How is Antimony(III) telluride shipped?
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Antimony(III) telluride is shipped under UN 1549, Hazard Class 6.1, Packing Group III regulations, reflecting its hazardous nature.
How can I request a quote or sample?
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Please contact our sales team directly via phone or email to request a quote or inquire about sample availability for Antimony(III) telluride.
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