Back حلقي الهكسان Arabic Sikloheksan AZ سیکلوهقزان AZB Цыклагексан BE Циклохексан Bulgarian Ciclohexà Catalan Cyklohexan Czech Cyklohexan Danish Cyclohexan German Κυκλοεξάνιο Greek
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| Names | |||
|---|---|---|---|
| Preferred IUPAC name
Cyclohexane[2] | |||
| Other names
Hexanaphthene (archaic)[1]
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| Identifiers | |||
3D model (JSmol)
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| 1900225 | |||
| ChEBI | |||
| ChEMBL | |||
| ChemSpider | |||
| DrugBank | |||
| ECHA InfoCard | 100.003.461 | ||
| 1662 | |||
| KEGG | |||
PubChem CID
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| RTECS number |
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| UNII | |||
| UN number | 1145 | ||
CompTox Dashboard (EPA)
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| 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)[3] | ||
| −68.13·10−6 cm3/mol | |||
Refractive index (nD)
|
1.42662 | ||
| Viscosity | 1.02 cP at 17 °C | ||
| Hazards | |||
| GHS labelling: | |||
   
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| 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%[3] | ||
| Lethal dose or concentration (LD, LC): | |||
LD50 (median dose)
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12705 mg/kg (rat, oral) 813 mg/kg (mouse, oral)[4] | ||
LCLo (lowest published)
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17,142 ppm (mouse, 2 h) 26,600 ppm (rabbit, 1 h)[4] | ||
| NIOSH (US health exposure limits): | |||
PEL (Permissible)
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TWA 300 ppm (1050 mg/m3)[3] | ||
REL (Recommended)
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TWA 300 ppm (1050 mg/m3)[3] | ||
IDLH (Immediate danger)
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1300 ppm[3] | ||
| Thermochemistry | |||
Std enthalpy of
formation (ΔfH⦵298) |
−156 kJ/mol | ||
Std enthalpy of
combustion (ΔcH⦵298) |
−3920 kJ/mol | ||
| Related compounds | |||
Related cycloalkanes
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Cyclopentane Cycloheptane | ||
Related compounds
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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).
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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.[5]
Cyclohexyl (C6H11) is the alkyl substituent of cyclohexane and is abbreviated Cy.[6]
- ^ "Hexanaphthene". dictionary.com. Archived from the original on 2018-02-12.
- ^ "Front Matter". Nomenclature of Organic Chemistry : IUPAC Recommendations and Preferred Names 2013 (Blue Book). Cambridge: The Royal Society of Chemistry. 2014. pp. P001–P004. doi:10.1039/9781849733069-FP001. ISBN 978-0-85404-182-4.
- ^ a b c d e NIOSH Pocket Guide to Chemical Hazards. "#0163". National Institute for Occupational Safety and Health (NIOSH).
- ^ a b "Cyclohexane". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
- ^ Campbell, M. Larry (2011). "Cyclohexane". Ullmann's Encyclopedia of Industrial Chemistry. doi:10.1002/14356007.a08_209.pub2. ISBN 978-3527306732.
- ^ "Standard Abbreviations and Acronyms" (PDF). The Journal of Organic Chemistry. Archived from the original (PDF) on 1 Aug 2018.