| Formula / Notation | Ni |
|---|---|
| CAS Number | 7440-02-0 |
| Molecular Weight | 58.69 |
| Melting Point | 1455.0 |
| Boiling Point | 2913.0 |
| Density | 8.91 |
| Solubility | Insoluble in water |
| Appearance | Hard, lustrous, silvery-white metal |
| Also Known As | Ni, nickel metal |
| Category | Elements |
What is Nickel?
Nickel is a hard, lustrous, silvery-white transition metal, atomic number 28. Corrosion resistant and highly valued in alloys. Responsible for most cases of contact dermatitis (nickel allergy) worldwide. Fifth most common element in Earth core.
Formula & Notation
IUPAC Name: Nickel
Other Names / Synonyms: Ni, nickel metal
Properties & Characteristics
Physical Data
| Property | Value |
|---|---|
| Melting Point | 1455.0 |
| Boiling Point | 2913.0 |
| Density | 8.91 |
| Molecular Weight | 58.69 |
| Solubility | Insoluble in water |
| Appearance | Hard, lustrous, silvery-white metal |
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
Nickel is a hard, lustrous, silvery-white transition metal, atomic number 28. Corrosion resistant and highly valued in alloys. Responsible for most cases of contact dermatitis (nickel allergy) worldwide. Fifth most common element in Earth core.
Stainless steel (Ni provides corrosion resistance). Nickel-cadmium and nickel-metal hydride batteries. Coins. Electroplating (nickel under chrome). Ni-based superalloys for jet engines. Hydrogenation catalyst (Raney Ni). Nickel-titanium alloys (Nitinol - shape memory).
Nickel and nickel compounds: Group 1 carcinogen (IARC) - causes nasal/lung cancer. Most common metal allergen - nickel dermatitis affects 10-20% of population. Nickel tetracarbonyl (Ni(CO)4): extremely toxic gas (IDLH 2 ppm). Nickel dust/fumes: respiratory carcinogen.
The formula or notation for Nickel is: Ni