Melting Point of Common Alkanes
The melting point of alkanes, also known as paraffins, generally increases with an increase in the molecular weight or size of the hydrocarbon molecules. The following table provides a comprehensive list of melting point values for common alkanes at 1 atmospheric (atm) pressure. (1 atm = 101,325 Pa)
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| Methane (CH4) | -182.5 |
| Ethane (C2H6) | -182.8 |
| Propane (C3H8) | -187.8 |
| Butane (C4H10) | -138.3 |
| Pentane (C5H12) | -129.8 |
| Hexane (C6H14) | -95.4 |
| Heptane (C7H16) | -90.5 |
| Octane (C8H18) | -56.7 |
| Nonane (C9H20) | -51 |
| Decane (C10H22) | -29.7 |
| Undecane (C11H24) | -25.5 |
| Dodecane (C12H26) | -9.6 |
| Tridecane (C13H28) | -5.5 |
| Tetradecane (C14H30) | 5.9 |
| Pentadecane (C15H32) | 10 |
| Hexadecane (C16H34) | 18.2 |
| Heptadecane (C17H36) | 22 |
| Octadecane (C18H38) | 28 |
| Nonadecane (C19H40) | 32 |
| Eicosane (C20H42) | 36.5 |
| Heneicosane (C21H44) | 40.5 |
| Docosane (C22H46) | 43.8 |
| Tricosane (C23H48) | 47.4 |
| Tetracosane (C24H50) | 50.3 |
| Pentacosane (C25H52) | 53.3 |
| Hexacosane (C26H54) | 56 |
| Heptacosane (C27H56) | 58.8 |
| Octacosane (C28H58) | 61.3 |
| Nonacosane (C29H60) | 63.7 |
| Triacontane (C30H62) | 65.9 |
| Hentriacontane (C31H64) | 68 |
| Dotriacontane (C32H66) | 69.7 |
| Tritriacontane (C33H68) | 71.2 |
| Tetratriacontane (C34H70) | 70.1 |
| Pentatriacontane (C35H72) | 74.7 |
| Hexatriacontane (C36H74) | 75 |
| Heptatriacontane (C37H76) | 77.7 |
| Octatriacontane (C38H78) | 79 |
| Nonatriacontane (C39H80) | 80 |
| Tetracontane (C40H82) | 81.5 |
| Hentetracontane (C41H84) | 80.8 |
| Dotetracontane (C42H86) | 83 |
| Tritetracontane (C43H88) | 85.5 |
| Tetratetracontane (C44H90) | 86 |
| Pentatetracontane (C45H92) | 87 |
| Hexatetracontane (C46H94) | 87.9 |
| Heptatetracontane (C47H96) | 88 |
| Octatetracontane (C48H98) | 88 |
| Nonatetracontane (C49H100) | 90 |
| Pentacontane (C50H102) | 92 |
| Henpentacontane (C51H104) | 92.9 |
| Dopentacontane (C52H106) | 93.9 |
| Tripentacontane (C53H108) | 94.4 |
| Tetrapentacontane (C54H110) | 95 |
| Pentapentacontane (C55H112) | 95.4 |
| Hexapentacontane (C56H114) | 96 |
| Heptapentacontane (C57H116) | 96.6 |
| Octapentacontane (C58H118) | 97 |
| Nonapentacontane (C59H120) | 98 |
| Hexacontane (C60H122) | 99 |
| Henhexacontane (C61H124) | 100 |
| Dohexacontane (C62H126) | 102 |
| Trihexacontane (C63H128) | 102 |
| Tetrahexacontane (C64H130) | 102 |
| Pentahexacontane (C65H132) | 103 |
| Hexahexacontane (C66H134) | 104 |
| Heptahexacontane (C67H136) | 104 |
| Octahexacontane (C68H138) | 105 |
| Nonahexacontane (C69H140) | 105 |
| Heptacontane (C70H142) | 106 |
Related Tables
References: 1) Cardarelli, François. Materials Handbook: A Concise Desktop Reference. Switzerland: Springer International Publishing, 2018. 2) CRC Handbook of Chemistry and Physics, 97th Edition. United Kingdom: CRC Press, 2016-2017. 3) Yaws, Carl L. The Yaws Handbook of Physical Properties for Hydrocarbons and Chemicals. Netherlands: Elsevier Science, 2015. 4) Occupational Safety and Health Administration (OSHA): The National Institute for Occupational Safety and Health (NIOSH).