Cyclooctadecane

• Formula: C₁₈H₃₆
• Molecular weight: 252.4784
• IUPAC Standard InChI: InChI=1S/C18H36/c1-2-4-6-8-10-12-14-16-18-17-15-13-11-9-7-5-3-1/h1-18H2 Copy

  
• IUPAC Standard InChIKey: JNFIMRWCDIOUMT-UHFFFAOYSA-N Copy
• CAS Registry Number: 296-18-4
• Chemical structure:
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• Information on this page:
  • Phase change data
  • References
  • Notes
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Phase change data

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos

Enthalpy of fusion

Entropy of fusion

Enthalpy of phase transition

Entropy of phase transition

References

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Borgen and Dale, 1969
Borgen, G.; Dale, J., gem-Dimethyl substituted cyclooctadecanes, conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative, J. Chem. Soc., 1969, 1969, 447-8. [all data]

Sondheimer, Amiel, et al., 1957
Sondheimer, F.; Amiel, Y.; Wolovsky, R., Unsaturated Macrocyclic Compounds V. Large Ring Poly-acetylenes, J. Am. Chem. Soc., 1957, 79, 4247-8. [all data]

Sondheimer, Amiel, et al., 1957, 2
Sondheimer, F.; Amiel, Y.; Wolovsky, R., Unsaturated Macrocyclic Compounds IV. The Oxidation of Terminal Diacetylenes to Macrocyclic Tetraacetaylenes, J. Am. Chem. Soc., 1957, 79, 6263. [all data]

Borgen and Dale, 1969, 2
Borgen, G.; Dale, J., gem-Dimethyl substituted cyclooctadecanes, conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative, J. Chem. Soc., 1969, D, Chem. [all data]

Borgen and Dale, 1969, 3
Borgen, Gerd; Dale, Johannes, gem-Dimethyl substituted cyclo-octadecanes; conformational homogeneity of the 1,1,4,4,10,10,13,13-octamethyl derivative, J. Chem. Soc. D, 1969, 9, 447, https://doi.org/10.1039/c29690000447 . [all data]

Notes

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• Symbols used in this document:
  

  Tfus	Fusion (melting) point
  ΔHtrs	Enthalpy of phase transition
  ΔStrs	Entropy of phase transition
  ΔfusH	Enthalpy of fusion
  ΔfusS	Entropy of fusion

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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