Cyclohexane
|
| |||
|
| |||
| Names | |||
|---|---|---|---|
| Preferred IUPAC name
Cyclohexane | |||
| Other names
Hexanaphthene (archaic) | |||
| Identifiers | |||
3D model (JSmol) |
|||
| 1900225 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| DrugBank | |||
| ECHA InfoCard | 100.003.461 | ||
| 1662 | |||
| KEGG | |||
PubChem CID |
|||
| RTECS number |
| ||
| UNII | |||
| UN number | 1145 | ||
CompTox Dashboard (EPA) |
|||
| |||
| |||
| Properties | |||
| C6H12 | |||
| Molar mass | 84.162 g·mol−1 | ||
| Appearance | Colourless liquid | ||
| Odor | Sweet, gasoline-like | ||
| Density | 0.7739 g/ml (liquid); 0.996 g/ml (solid) | ||
| Melting point | 6.47 °C (43.65 °F; 279.62 K) | ||
| Boiling point | 80.74 °C (177.33 °F; 353.89 K) | ||
| Immiscible | |||
| Solubility | Soluble in ether, alcohol, acetone | ||
| Vapor pressure | 78 mmHg (20 °C) | ||
| −68.13·10−6 cm3/mol | |||
Refractive index (nD) |
1.42662 | ||
| Viscosity | 1.02 cP at 17 °C | ||
| Hazards | |||
| GHS labelling: | |||
| Danger | |||
| H225, H304, H315, H336 | |||
| P210, P233, P240, P241, P242, P243, P261, P264, P271, P273, P280, P301+P310, P302+P352, P303+P361+P353, P304+P340, P312, P321, P331, P332+P313, P362, P370+P378, P391, P403+P233, P403+P235, P405, P501 | |||
| NFPA 704 (fire diamond) | |||
| Flash point | −20 °C (−4 °F; 253 K) | ||
| 245 °C (473 °F; 518 K) | |||
| Explosive limits | 1.3–8% | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
12705 mg/kg (rat, oral) 813 mg/kg (mouse, oral) | ||
LCLo (lowest published) |
17,142 ppm (mouse, 2 h) 26,600 ppm (rabbit, 1 h) | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible) |
TWA 300 ppm (1050 mg/m3) | ||
REL (Recommended) |
TWA 300 ppm (1050 mg/m3) | ||
IDLH (Immediate danger) |
1300 ppm | ||
| Thermochemistry | |||
Std enthalpy of formation (ΔfH⦵298) |
−156 kJ/mol | ||
Std enthalpy of combustion (ΔcH⦵298) |
−3920 kJ/mol | ||
| Related compounds | |||
Related cycloalkanes |
Cyclopentane Cycloheptane | ||
Related compounds |
Cyclohexene Benzene | ||
| Supplementary data page | |||
| Cyclohexane (data page) | |||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references | |||
Cyclohexane is a cycloalkane with the molecular formula C6H12. Cyclohexane is non-polar. Cyclohexane is a colourless, flammable liquid with a distinctive detergent-like odor, reminiscent of cleaning products (in which it is sometimes used). Cyclohexane is mainly used for the industrial production of adipic acid and caprolactam, which are precursors to nylon.
Cyclohexyl (C6H11) is the alkyl substituent of cyclohexane and is abbreviated Cy.