| Methane |  |  |
| General: | |
| Molecular formula | CH4 |
| Main hazard | Extremely flammable (F+) |
| Autoignition temperature | 537 C |
| Explosion limits | 5 – 15% |
| Appearance | Colourless gas |
| Molar mass | 16,0425 g/mol |
| Properties: | |
| Density | 0,717 g/L (lighter than air) |
| Solubility in water | 3,5 mg/100 mL |
| Melting point | -182,5 C (90,6 K) |
| Boiling point | -161,6 C (111,55 K) |
| Health: | |
 | 4 – Deadly |
| 3 – Extreme danger |
| 2 – Hazardous |
| 1 – Slightly hazardous |
| 0 – Normal materials |
| Fire: | |
 | 4 – Very Flammable |
| 3 – Readily Ignitable |
| 2 – Ignited with heat |
| 1 – Combustible |
| 0 – Will not burn |
| Reactivity: | |
 | 4 – May detonate |
| 3 – Shock & heat may detonate |
| 2 – Violent chemical change |
| 1 – Unstable if heated |
| 0 – Stable |
| Specific Hazard: | |
 | OXE – Oxidizer |
| ACID – Acid |
| ALK – Alkali |
| COR – Corrosive |
| W – Use no water |
