Cobalt monoantimonide
Cobalt monoantimonide (CAS: 12052-42-5) is a metallic compound with the linear formula CoSb. It is supplied by Tech Serve Solutions with a purity of 99.9% trace metals basis and a particle size of -80 mesh. Cobalt monoantimonide is recognised for its properties as a thermoelectric material for high-temperature applications and is also utilized as an electrode material in lithium-ion batteries.
- IUPAC
- Cobalt antimonide

Thermoelectric Materials
Cobalt monoantimonide, belonging to the skutterudites family, is a promising material for high-temperature thermoelectric applications. Its thermoelectric power can be enhanced through doping, interstitial atom filling, or nanostructuring.
Battery Electrode Materials
In recent years, cobalt monoantimonide has been explored and used as an effective electrode material for lithium-ion batteries, contributing to advancements in energy storage technology.
Alloy and Materials Science
As a metallic alloy, Cobalt monoantimonide finds applications within materials science research, particularly in the study of metal and ceramic systems and alternative energy solutions.
| Linear formula | CoSb |
|---|---|
| Assay | 99.9% trace metals basis |
| Particle size | -80 mesh |
| Application | Skutterudites such as Cobalt antimonides are widely studied as a promising thermoelectric (TE) material for high-temperature applications. The thermoelectric power of the cobalt antimonides can be further improved by suitable doping or by filling the interstitial voids with guest atoms and also by nanostructuring.In recent years CoSb is also used as electrode material for lithium ion batteries. |
| Melting point | 1202 °C(lit.) |


Hazard statements
- H302Harmful if swallowed
- H311Toxic in contact with skin
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P312Call a POISON CENTER if you feel unwell
| 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 Cobalt monoantimonide used for?
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Cobalt monoantimonide is primarily used as a thermoelectric material for high-temperature applications and as an electrode material in lithium-ion batteries. It also finds applications in alloys and materials science.
What is the CAS number and formula for Cobalt monoantimonide?
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The CAS number for Cobalt monoantimonide is 12052-42-5, and its linear formula is CoSb.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cobalt monoantimonide with an assay of 99.9% trace metals basis and a particle size of -80 mesh. TSS does not represent this product as USP, BP, or EP grade.
How should Cobalt monoantimonide be handled safely?
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Cobalt monoantimonide is harmful if swallowed or inhaled, causes skin irritation, serious eye irritation, and is toxic in contact with skin. It is also toxic to aquatic life with long-lasting effects. Handle with appropriate personal protective equipment (gloves, eye protection, respiratory protection) in a well-ventilated area, and avoid release into the environment.
How is Cobalt monoantimonide packed and exported?
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Cobalt monoantimonide is typically packed according to international shipping regulations for hazardous materials, including UN 1549, Class 6.1, Packing Group III. Tech Serve Solutions exports globally, adhering to all relevant transport and customs requirements.
How can I request a quote or sample for Cobalt monoantimonide?
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To request a quote or a sample of Cobalt monoantimonide, please contact our sales team through the TSS website or by phone. We are happy to assist with your specific requirements.
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