Homologous series
Melting points from methane to eicosane
| Index | Name | Value |
| 1 | methane | -182.6 |
| 2 | ethane | -181.76 |
| 3 | propane | -187.7 |
| 4 | butane | -138.4 |
| 5 | pentane | -129 |
| 6 | hexane | -97 |
| 7 | heptane | -90 |
| 8 | octane | -56.8 |
| 9 | nonane | -51 |
| 10 | decane | -32 |
| 11 | undecane | -26.5 |
| 12 | dodecane | -12 |
| 13 | tridecane | -6.2 |
| 14 | tetradecane | 5.5 |
| 15 | pentadecane | 10 |
| 16 | hexadecane | 18 |
| 17 | heptadecane | 22.5 |
| 18 | octadecane | 28 |
| 19 | nonadecane | 32 |
| 20 | eicosane | 36.7 |
