Cyclic · C₆H₁₂
A cyclic alkane — the precursor to nylon intermediates. Feedstock for adipic acid and caprolactam (nylon); a nonpolar solvent.
| Formula | C₆H₁₂ |
| CAS number | 110-82-7 |
| Synonyms | hexahydrobenzene |
| Molar mass | 84.16 g/mol (Computed from the molecular formula and CODATA atomic weights) |
| Normal boiling point | 80.74 °C (NIST Chemistry WebBook (webbook.nist.gov)) |
| Liquid density | 779 kg/m³ (Reference liquid density near 20–25 °C (NIST WebBook)) |
Antoine equation (mmHg/°C): log₁₀(P) = 6.8413 − 1201.53 / (222.65 + T), valid 20–81 °C. Source: NIST Chemistry WebBook (webbook.nist.gov).
| °C | kPa | bar | mmHg | psia |
|---|---|---|---|---|
| 20.0 | 10.34 | 0.1034 | 77.6 | 1.500 |
| 32.2 | 17.85 | 0.1785 | 133.9 | 2.588 |
| 44.4 | 29.30 | 0.2930 | 219.8 | 4.250 |
| 56.6 | 46.08 | 0.4608 | 345.6 | 6.683 |
| 68.8 | 69.76 | 0.6976 | 523.2 | 10.118 |
| 81.0 | 102.15 | 1.0215 | 766.2 | 14.816 |
Using its Antoine constants (NIST Chemistry WebBook (webbook.nist.gov)), the saturation pressure of cyclohexane at 25 °C is about 13.02 kPa. Use the calculator above for any temperature within 20–81 °C.
Cyclohexane boils at 80.74 °C at atmospheric pressure (NIST Chemistry WebBook (webbook.nist.gov)). At that temperature its vapor pressure equals one atmosphere (760 mmHg).
Cyclohexane (C₆H₁₂, CAS 110-82-7) has a molar mass of 84.16 g/mol.