Cobalt triantimonide
Cobalt triantimonide (CAS 12187-20-1), molecular formula CoSb3, is a high-purity chemical supplied by Tech Serve Solutions for metal & ceramic science applications, to pharmacopoeia specification (USP, BP, EP). Every batch is tested and ships with a Certificate of Analysis; MSDS and technical data sheets are available on request. Tech Serve Solutions has supplied laboratory reagents, fine chemicals and pharmaceutical intermediates worldwide since 1998.
- IUPAC
- CoSb3,Cobalt antimonide

| Molecular weight | 424.21 |
|---|---|
| Empirical formula | CoSb3 |
| Assay | 99.9% trace metals basis |
| Particle size | -80 mesh |
| Application | Cobalt antimonide is a skutterudite which has been widely studied for its thermoelectric properties. It can be doped with different elements to further increase its thermopower. By varying the dopant element it can be tuned to exhibit either p- or n-type semiconductor properties. |
| Melting point | >400 °C |


Hazard statements
- H302Harmful if swallowed
- H331Toxic if inhaled
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P311Call a POISON CENTER or doctor
- P501Dispose of contents and container per local regulations
| 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
Supplied to USP, BP and EP standards. Every batch ships with a Certificate of Analysis (assay, identity, purity); MSDS 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 triantimonide?
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Cobalt triantimonide (CAS 12187-20-1), molecular formula CoSb3, is a high-purity chemical supplied by Tech Serve Solutions for metal & ceramic science applications, to USP, BP and EP standards.
What grades of Cobalt triantimonide does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cobalt triantimonide in USP, BP, EP and reagent/AR grades. Custom specifications for nutraceutical or specialty pharmaceutical applications are available — contact our technical sales team.
What is the CAS number and molecular formula of Cobalt triantimonide?
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Cobalt triantimonide has CAS number 12187-20-1 and molecular formula CoSb3. Full specifications appear in the table above and in the Certificate of Analysis.
What is the typical minimum order quantity and lead time for Cobalt triantimonide?
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Sample quantities are available for technical evaluation; bulk MOQ depends on grade and packaging. In-stock material typically ships in 7–10 working days; custom-spec orders take 3–4 weeks. Tech Serve Solutions ships worldwide with full export documentation.
Do you provide a Certificate of Analysis (CoA) with each shipment?
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Yes. Every batch of Cobalt triantimonide ships with a Certificate of Analysis covering assay, identity and purity tests, plus pharmacopoeia conformance where applicable. MSDS and TDS documents are available on request before order placement.
How should Cobalt triantimonide be stored?
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Store Cobalt triantimonide in its original sealed container in a cool, dry place away from direct sunlight and incompatible materials, in line with the storage guidance on the Safety Data Sheet. Reseal between dispensings.
What is Cobalt triantimonide used for?
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Cobalt triantimonide is used in metal & ceramic science applications across pharmaceutical, research and industrial settings. Our technical team can advise on suitability for your specific process.
How do I request a quote for Cobalt triantimonide?
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Request a quote with your required grade, quantity and destination via https://www.techservesolutions.in/contact or email info@techservesolutions.in. We respond with specifications, a Certificate of Analysis and pricing.
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