Indium antimonide
Indium antimonide (CAS: 1312-41-0) is a binary compound of indium and antimony with the linear formula InSb. It crystallises in the zinc blende structure, cubic. This compound is a narrow-gap semiconductor known for its high electron mobility, making it valuable in specialized electronic and optoelectronic applications, particularly in infrared detection and high-frequency devices.

Infrared Detectors
Indium antimonide is a crucial material for fabricating photodetectors sensitive to infrared radiation. Its band gap properties are well-suited for thermal imaging and sensing applications.
Semiconductor Research
Due to its exceptional electron mobility, InSb is extensively studied and used in research for advanced semiconductor devices, including high-speed transistors and Hall effect sensors.
Thermoelectric Materials
Indium antimonide exhibits thermoelectric properties that are explored for potential use in solid-state cooling and power generation devices.
| Molecular weight | 236.58 |
|---|---|
| Linear formula | InSb |
| Assay | ≥99.99% trace metals basis |
| Form | crystals |
| Application | Crystal structure: Zinc blende structure, cubic |


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) | 2 |
| 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 Indium antimonide used for?
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Indium antimonide is primarily used in the fabrication of infrared detectors, advanced semiconductor devices due to its high electron mobility, and in research related to thermoelectric materials.
What is the CAS number and formula for Indium antimonide?
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The CAS number for Indium antimonide is 1312-41-0, and its linear formula is InSb.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Indium antimonide with a purity of ≥99.99% trace metals basis. We do not represent this product as USP, BP, or EP grade.
How should Indium antimonide be handled safely?
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Indium antimonide 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 Indium antimonide packed and shipped?
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Indium antimonide is packed and shipped according to UN 1549 regulations for toxic solids, organic, N.O.S., hazard class 6.1, with packing group III. We are a global supplier and exporter.
How can I request a quote or sample for Indium antimonide?
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To request a quote or sample for Indium antimonide, please contact our sales team through our website or by phone.
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