| Formula / Notation | Co |
|---|---|
| CAS Number | 7440-48-4 |
| Molecular Weight | 58.93 |
| Melting Point | 1495.0 |
| Boiling Point | 2927.0 |
| Density | 8.9 |
| Solubility | Insoluble in water |
| Appearance | Hard, lustrous, silver-grey metal with blue tint |
| Also Known As | Co, cobalt metal |
| Category | Elements |
What is Cobalt?
Cobalt is a hard, lustrous, silver-grey transition metal, atomic number 27. Used since antiquity to produce blue colour in glass and ceramics (cobalt blue). Essential trace element for animals as component of vitamin B12. Important in lithium-ion battery cathodes.
Formula & Notation
IUPAC Name: Cobalt
Other Names / Synonyms: Co, cobalt metal
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 1495.0 |
| Boiling Point | 2927.0 |
| Density | 8.9 |
| Molecular Weight | 58.93 |
| Solubility | Insoluble in water |
| Appearance | Hard, lustrous, silver-grey metal with blue tint |
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Cobalt is a hard, lustrous, silver-grey transition metal, atomic number 27. Used since antiquity to produce blue colour in glass and ceramics (cobalt blue). Essential trace element for animals as component of vitamin B12. Important in lithium-ion battery cathodes.
Lithium-ion battery cathodes (LiCoO2). Superalloys for jet engines and turbines. Cobalt blue pigment (glass, ceramics, paints). Vitamin B12 (cyanocobalamin contains cobalt). Hard metal cutting tools (WC-Co). Radioactive Co-60 for radiotherapy and food irradiation.
Cobalt compounds: suspected carcinogen (IARC Group 2B). Inhalation of cobalt dust causes hard metal lung disease. Skin sensitiser - causes cobalt dermatitis. Soluble cobalt salts: toxic if ingested. Co-60 radiation source: severe radiation hazard requiring strict controls.
The formula or notation for Cobalt is: Co