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Skeletal formula Ball-and-stick model
CAS number 291-64-5 YesY
PubChem 9265
ChemSpider 8908 YesY
Jmol-3D images Image 1
Molecular formula C7H14
Molar mass 98.19 g mol−1
Density 0.8110 g/cm3
Melting point −12 °C (10 °F; 261 K)
Boiling point 118.4 °C (245.1 °F; 391.5 K)
Solubility in water Immiscible
Solubility in ethanol Miscible
EU classification Flammable (F)
Harmful (Xn)
Dangerous for
the environment (N)
Severe eye irritant, may cause corneal clouding
NFPA 704
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., gasoline) Health code 1: Exposure would cause irritation but only minor residual injury. E.g., turpentine Reactivity (yellow): no hazard code Special hazards (white): no codeNFPA 704 four-colored diamond
Flash point 6 °C (43 °F; 279 K)
Related compounds
Related cycloalkanes Cyclohexane Cyclooctane
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

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]


  1. ^ Mackay, Donald (2006). Handbook of Physical-chemical Properties and Environmental Fate for Organic Chemicals. CRC Press. ISBN 1-56670-687-4.