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| Specification | Gasoline | Ethanol |
|---|---|---|
| Chemical formula | CnH2n+2 (n=4–12) | C2H5OH |
| M/(g/mol) | 100-105 | 46.07 |
| Octane number | 88-100 | 108 |
| ρ/(kg/dm3) | 0.69-0.79 | 0.79 |
| Boiling point/°C | 27-225 | 78 |
| Freezing point/°C | -22.2 | -96.1 |
| Flash point/°C | -43 | 13 |
| Autoignition temperature/°C | 275 | 440 |
| Lower heating value.103/(kJ/dm3) | 30-33 | 21.1 |
| Latent vapourisation heat/(kJ/kg) | 289 | 854 |
| Solubility in water | insoluble | soluble |
