Molar Mass of Common Alkanes
Alkanes are hydrocarbons consisting of only carbon and hydrogen atoms, with the general formula CnH2n+2. The molar mass of alkanes is determined by adding the atomic masses of all the atoms in a single molecule of the alkane. The following table provides a curated list of molar mass values for common alkanes.
| Methane (CH4) | 16.04 |
| Ethane (C2H6) | 30.07 |
| Propane (C3H8) | 44.1 |
| Butane (C4H10) | 58.12 |
| Pentane (C5H12) | 72.15 |
| Hexane (C6H14) | 86.18 |
| Heptane (C7H16) | 100.2 |
| Octane (C8H18) | 114.23 |
| Nonane (C9H20) | 128.25 |
| Decane (C10H22) | 142.28 |
| Undecane (C11H24) | 156.31 |
| Dodecane (C12H26) | 170.33 |
| Tridecane (C13H28) | 184.36 |
| Tetradecane (C14H30) | 198.39 |
| Pentadecane (C15H32) | 212.41 |
| Hexadecane (C16H34) | 226.44 |
| Heptadecane (C17H36) | 240.47 |
| Octadecane (C18H38) | 254.49 |
| Nonadecane (C19H40) | 268.52 |
| Eicosane (C20H42) | 282.55 |
| Heneicosane (C21H44) | 296.57 |
| Docosane (C22H46) | 310.6 |
| Tricosane (C23H48) | 324.63 |
| Tetracosane (C24H50) | 338.65 |
| Pentacosane (C25H52) | 352.68 |
| Hexacosane (C26H54) | 366.71 |
| Heptacosane (C27H56) | 380.73 |
| Octacosane (C28H58) | 394.76 |
| Nonacosane (C29H60) | 408.79 |
| Triacontane (C30H62) | 422.81 |
| Hentriacontane (C31H64) | 436.84 |
| Dotriacontane (C32H66) | 450.87 |
| Tritriacontane (C33H68) | 464.89 |
| Tetratriacontane (C34H70) | 478.92 |
| Pentatriacontane (C35H72) | 492.95 |
| Hexatriacontane (C36H74) | 506.97 |
| Heptatriacontane (C37H76) | 521 |
| Octatriacontane (C38H78) | 535.03 |
| Nonatriacontane (C39H80) | 549.05 |
| Tetracontane (C40H82) | 563.08 |
| Hentetracontane (C41H84) | 577.11 |
| Dotetracontane (C42H86) | 591.13 |
| Tritetracontane (C43H88) | 605.16 |
| Tetratetracontane (C44H90) | 619.19 |
| Pentatetracontane (C45H92) | 633.21 |
| Hexatetracontane (C46H94) | 647.24 |
| Heptatetracontane (C47H96) | 661.27 |
| Octatetracontane (C48H98) | 675.29 |
| Nonatetracontane (C49H100) | 689.32 |
| Pentacontane (C50H102) | 703.34 |
| Henpentacontane (C51H104) | 717.37 |
| Dopentacontane (C52H106) | 731.4 |
| Tripentacontane (C53H108) | 745.42 |
| Tetrapentacontane (C54H110) | 759.45 |
| Pentapentacontane (C55H112) | 773.48 |
| Hexapentacontane (C56H114) | 787.5 |
| Heptapentacontane (C57H116) | 801.53 |
| Octapentacontane (C58H118) | 815.56 |
| Nonapentacontane (C59H120) | 829.58 |
| Hexacontane (C60H122) | 843.61 |
| Henhexacontane (C61H124) | 857.64 |
| Dohexacontane (C62H126) | 871.66 |
| Trihexacontane (C63H128) | 885.69 |
| Tetrahexacontane (C64H130) | 899.72 |
| Pentahexacontane (C65H132) | 913.7 |
| Hexahexacontane (C66H134) | 927.77 |
| Heptahexacontane (C67H136) | 941.8 |
| Octahexacontane (C68H138) | 955.82 |
| Nonahexacontane (C69H140) | 969.85 |
| Heptacontane (C70H142) | 983.88 |
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).