Alkane · C₆H₁₄
A light alkane solvent — used in oilseed extraction. Extraction solvent (vegetable oils), a calibration hydrocarbon, and a naphtha component.
| Formula | C₆H₁₄ |
| CAS number | 110-54-3 |
| Synonyms | hexane |
| Molar mass | 86.18 g/mol (Computed from the molecular formula and CODATA atomic weights) |
| Normal boiling point | 68.73 °C (NIST Chemistry WebBook (webbook.nist.gov)) |
| Liquid density | 655 kg/m³ (Reference liquid density near 20–25 °C (NIST WebBook)) |
Antoine equation (mmHg/°C): log₁₀(P) = 6.9895 − 1216.92 / (227.451 + T), valid -25–92 °C. Source: NIST Chemistry WebBook (webbook.nist.gov).
| °C | kPa | bar | mmHg | psia |
|---|---|---|---|---|
| -25.0 | 1.27 | 0.0127 | 9.5 | 0.184 |
| -1.6 | 5.32 | 0.0532 | 39.9 | 0.772 |
| 21.8 | 17.06 | 0.1706 | 128.0 | 2.475 |
| 45.2 | 44.78 | 0.4478 | 335.9 | 6.495 |
| 68.6 | 100.90 | 1.0090 | 756.8 | 14.634 |
| 92.0 | 201.83 | 2.0183 | 1513.9 | 29.273 |
Using its Antoine constants (NIST Chemistry WebBook (webbook.nist.gov)), the saturation pressure of n-hexane at 25 °C is about 19.68 kPa. Use the calculator above for any temperature within -25–92 °C.
n-Hexane boils at 68.73 °C at atmospheric pressure (NIST Chemistry WebBook (webbook.nist.gov)). At that temperature its vapor pressure equals one atmosphere (760 mmHg).
n-Hexane (C₆H₁₄, CAS 110-54-3) has a molar mass of 86.18 g/mol.