CH₄CH416.0400 g·mol⁻¹
Molar mass16.040 g·mol⁻¹calc 16.043 • Atomic weights: CIAAW 2021 (conventional atomic weights)
FormulaCH₄CH4
Classmolecular • covalentgas
| Element | Count | Mass (g/mol) | Mass % |
|---|---|---|---|
| C | 1 | 12.011 | 74.87% |
| H | 4 | 4.032 | 25.13% |
Physical properties
- State at STP
- gas
- Density
- 0.000657 g·cm⁻³ (gas at STP)
- Melting point
- 90.69 K (1 atm)
- Boiling point
- 111.66 K (1 atm)
Structure & bonding
Tetrahedral with four equivalent C-H sigma bonds. Nonpolar.
Occurrence & preparation
Main component of natural gas; anaerobic decay.
Uses
- Fuel
- Chemical feedstock
Safety
Flammable gas; asphyxiant.
Consult current SDS. — consult current SDS before handling.