Cobalt(II) selenide
Cobalt(II) selenide (CAS: 1307-99-9) is an inorganic compound with the empirical formula CoSe and a molecular weight of 137.89 g/mol. It presents as a solid material with a density of 7.65 g/mL at 25 °C. This chalcogenide compound finds applications in materials science, particularly within metal and ceramic science, owing to its unique electrochemical and physical properties.

Materials Science Research
Cobalt(II) selenide serves as a precursor or component in the development of novel materials, including semiconductors and energy storage solutions. Its properties make it a subject of study for advanced material applications.
Catalysis Development
This compound's chemical structure and reactivity suggest potential utility in catalytic processes. Research may explore its application in various chemical transformations and industrial syntheses.
Electrochemical Studies
Cobalt(II) selenide is investigated for its electrochemical characteristics, relevant to battery technology and sensor development. Its performance in electrochemical systems is an active area of research.
| Molecular weight | 137.89 |
|---|---|
| Empirical formula | CoSe |
| Density | 7.65 g/mL at 25 °C(lit.) |
| Particle size | 6 mm |



Hazard statements
- H301Toxic if swallowed
- H331Toxic if inhaled
- H373May cause damage to organs through prolonged exposure
- H410Very toxic to aquatic life with long-lasting effects
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P273Avoid release to the environment
- P301IF SWALLOWED
- P311Call a POISON CENTER or doctor
- P501Dispose of contents and container per local regulations
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3283 6.1/PG 3 |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T,N |
| Risk statements (R) | 23/25-33-50/53 |
| Safety statements (S) | 20/21-28-45-60-61 |
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(II) selenide used for?
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Cobalt(II) selenide is utilised in materials science research, catalysis development, and electrochemical studies. Its specific properties are explored for applications in semiconductors and energy storage.
What is the CAS number and formula for Cobalt(II) selenide?
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The CAS number for Cobalt(II) selenide is 1307-99-9, and its empirical formula is CoSe.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Cobalt(II) selenide as a technical/research grade material. We do not represent this product as meeting USP, BP, or EP pharmacopoeia standards.
How should Cobalt(II) selenide be handled safely?
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Cobalt(II) selenide is classified as toxic if swallowed or inhaled and may cause damage to organs through prolonged or repeated exposure. It is also very toxic to aquatic life with long-lasting effects. Always use appropriate personal protective equipment, including a dust mask (type N95 or P2 respirator cartridges), eyeshields, face shields, and gloves, in a well-ventilated area or fume hood.
Is Cobalt(II) selenide a controlled substance?
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The provided safety data does not indicate that Cobalt(II) selenide is a controlled substance.
How is Cobalt(II) selenide packed and shipped?
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Cobalt(II) selenide is shipped according to UN 3283 regulations for toxic solids. Packaging is designed to ensure safe transport and handling, suitable for global export. Specific packaging details can be provided upon request.
How can I request a quote or sample?
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To request a quote or sample of Cobalt(II) selenide, please contact our sales team via the website or by phone. Provide your contact details and the quantity required.
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