Cycloheptane

Cycloheptane is a cycloalkane with the molecular formula C7H14. Cycloheptane is used as a nonpolar solvent for the chemical industry and as an intermediate in the manufacture of chemicals and pharmaceutical drugs. It may be derived by Clemmensen reduction from cycloheptanone. Cycloheptane vapour is irritating to the eyes and may cause respiratory depression if inhaled in large quantity.[1]

Cycloheptane
Skeletal formula
Ball-and-stick model
Identifiers
3D model (JSmol)
ChEMBL
ChemSpider
ECHA InfoCard 100.005.483
EC Number
  • 206-030-2
UNII
UN number 2241
Properties
C7H14
Molar mass 98.189 g·mol−1
Appearance colorless oily liquid
Density 0.8110 g/cm3
Melting point −12 °C (10 °F; 261 K)
Boiling point 118.4 °C (245.1 °F; 391.5 K)
negligible
Solubility very soluble in ethanol, ether
soluble in benzene, chloroform
log P 4.0
1.4436
Hazards
GHS pictograms
GHS Signal word Danger
GHS hazard statements
 H225, H304, H412
P210, P233, P240, P241, P242, P243, P273, P280, P301+310, P303+361+353, P331, P370+378, P403+235, P405, P501
NFPA 704 (fire diamond)
Flammability code 3: Liquids and solids that can be ignited under almost all ambient temperature conditions. Flash point between 23 and 38 °C (73 and 100 °F). E.g. gasolineHealth code 1: Exposure would cause irritation but only minor residual injury. E.g. turpentineReactivity code 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3
1
0
Flash point 6 °C (43 °F; 279 K)
Related compounds
Related cycloalkanes
 Cyclohexane Cyclooctane
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Conformations

Below are some of the many possible conformations.[2]

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  • Chair
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References
  1. Mackay, Donald (2006). Handbook of Physical-chemical Properties and Environmental Fate for Organic Chemicals. CRC Press. ISBN 978-1566706872.
  2. Bocian, D. F.; Pickett, H. M.; Rounds, T. C.; Strauss, H. L. (1975). "Conformations of cycloheptane". Journal of the American Chemical Society. 97 (4): 687–695. doi:10.1021/ja00837a001. ISSN 0002-7863.
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