Cyclohexane

Cyclohexane
General
Molecular formula	C₆H₁₂
SMILES	C1CCCCC1
Molar mass	84.16 g/mol
Appearance	Colorless liquid
CAS number	^*
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 of formation Δ_fH^o_liquid	-156 kJ/mol
Standard enthalpy of combustion Δ_cH^o_liquid	-3920 kJ/mol
Standard molar entropy S^o_liquid	? J.K⁻¹.mol⁻¹
Hazards
MSDS	External MSDS
EU classification	Flammable (F) Harmful (Xn) Dangerous for the environment (N)
NFPA 704
R-phrases	, , , ,
S-phrases	, , , , , , ,
Supplementary data page
Structure and properties	n, ε_r, etc.
Thermodynamic data	Phase behaviour Solid, liquid, gas
Spectral data	UV, IR, NMR, MS
Regulatory data	Flash point, RTECS number, etc.
Related compounds
Related cycloalkanes	Cyclopentane Cycloheptane
Related compounds	Cyclohexene
Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Chemical infobox

Cyclohexane is a cycloalkane with the molecular formula C₆H₁₂. 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.

Chemical conformation

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.

External links

Cycloalkanes | Solvents

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Chemical conformation

See also

External links