N₂N228.0140 g·mol⁻¹
Molar mass28.014 g·mol⁻¹calc 28.014 • Atomic weights: CIAAW 2021 (conventional atomic weights)
FormulaN₂N2
Classmolecular • covalentgas
| Element | Count | Mass (g/mol) | Mass % |
|---|---|---|---|
| N | 2 | 28.014 | 100.00% |
Physical properties
- State at STP
- gas
- Density
- 0.001251 g·cm⁻³ (gas at STP)
- Melting point
- 63.15 K (1 atm)
- Boiling point
- 77.36 K (1 atm)
Structure & bonding
Triple bond N≡N — very strong bond giving kinetic inertness.
Occurrence & preparation
78% of air; industrial fractional distillation.
Uses
- Inert atmosphere
- Ammonia feedstock
Safety
Asphyxiant in confined spaces; liquid N2 causes frostbite.
Consult current SDS. — consult current SDS before handling.