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Cyclohexane Cyclohexane A cyclohexane molecule in chair conformation, with hydrogen atoms in axial position in red, equatorial in blue.
3D structure of a cyclohexane molecule
General Molecular formula C6 H12 SMILES C1CCCCC1 Molar mass 84.16 g/mol Appearance Colorless liquid CAS number [110-82-7] Properties Density and phase 0.779 g/ml, liquid Solubility in water Immiscible Solubility in ethanol Miscible Melting point 6.55 °C Boiling point 80.74 °C Viscosity 1.02 cP at 17 °C Index of refraction , n D 1.423 Thermodynamic data Standard enthalpy Î"f H o liquid -156 kJ/mol Standard enthalpy Î"c H o liquid -3920 kJ/mol Standard molar entropy S o liquid ? J.K−1 .mol−1 Hazards MSDS External MSDS EU classification Flammable (F )Xn )N ) NFPA 704 Nfpa_h1.png
Nfpa_f3.png
Nfpa_r0.png
R-phrases , , , S-phrases , , , , Supplementary data page Structure and n εr Thermodynamic Phase behaviour Spectral data UV , IR , NMR , MS Regulatory data Flash point ,RTECS number , etc. Related compounds Related cycloalkane s Cyclopentane Cycloheptane Related compounds Cyclohexene Except where noted otherwise, data are given forstandard state (at 25 °C, 100 kPa) Infobox disclaimer and references
Cyclohexane is a
cycloalkane with the
molecular formula C 6 H 12 . Cyclohexane is used as a
nonpolar solvent for the chemical industry, and also as a raw material for the industrial production of
adipic acid and
caprolactam , both of which are intermediates used in the production of
nylon .
To reduce
ring strain , cyclohexane adopts a three-dimensional structure known as the
chair conformation . Half of the substituents are in the plane of the ring (
equatorial ) while the other half are perpendicular to the plane (
axial ). Other conformations are boat, bent chair and twisted boat.
*
Hexane *
International Chemical Safety Card 0242 *
National Pollutant Inventory - Cyclohexane fact sheet *
NIOSH Pocket Guide to Chemical Hazards *
Cyclohexane@3Dchem
