Thermodynamics Research Center / ThermoML | Journal of Chemical Thermodynamics

Vapour pressures and enthalpies of vaporization of a series of the linear n-alkyl-benzenes

Verevkin, S. P.[Sergey P.]
J. Chem. Thermodyn. 2006, 38, 9, 1111-1123
ABSTRACT
Vapour pressures and the molar enthalpies of vaporization Hm of the linear alkyl-benzenes C6H5CnH2n+1 with the alkyl chain length n = 5, 7, 10, and 11 have been determined by the transpiration method. Kovat's indices of the linear and branched alkyl-benzenes C1 to C16 were collected from the available literature. A linear correlation of enthalpies of vaporization Hm at T = 298.15 K of the alkyl-benzenes with the number of carbon atoms, as well as with the Kovat's indices on the non-polar GC columns has been found. A simple GC-correlation approach for correlation and accurate predictions of vapour pressures and vaporization enthalpies of mono- and poly-alkyl-substituted benzenes has been suggested.
Compounds
# Formula Name
1 C11H16 pentylbenzene
2 C13H20 heptylbenzene
3 C16H26 1-phenyldecane
4 C17H28 undecylbenzene
Datasets
The table above is generated from the ThermoML associated json file (link above). POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied; the numbers refer to the table of compounds on the left.
Type Compound-# Property Variable Constraint Phase Method #Points
  • POMD
  • 1
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Transpiration method
  • 15
  • POMD
  • 2
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Transpiration method
  • 24
  • POMD
  • 3
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Transpiration method
  • 10
  • POMD
  • 4
  • Vapor or sublimation pressure, kPa ; Liquid
  • Temperature, K; Liquid
  • Liquid
  • Gas
  • Transpiration method
  • 12