Experimental measurements and thermodynamic modeling ofwax disappearance temperature for the binary systems n-C14H30 +n-C16H34, n-C16H34+n-C18H38 and n-C11H24+n-C18H38

S. Parsa, J. Javanmardi*, S. Aftab, K. Nasrifar

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The current work investigates the wax disappearance temperature (WDT) of three binary systems including n-tetradecane. +. n-hexadecane, n-hexadecane. +. n-octadecane and n-undecane. +. n-octadecane as a function of temperature at local atmospheric pressure. Verifying the uncertainties of the measurements, the WDT of pure n-hexadecane and the system n-tetradecane. +. n-hexadecane are compared with available experimental data reported in literature. Good agreement between the measured experimental data in the present study and those reported previously in literature is observed. Finally, by modeling the paraffin systems with different combinations of ideal solution behavior, regular solution theory, predictive Wilson, predictive UNIQUAC and UNIFAC, the solid-liquid equilibria of the binary systems were described to find the most accurate model without using any adjustable parameter.

Original languageEnglish
Pages (from-to)93-99
Number of pages7
JournalFluid Phase Equilibria
Publication statusPublished - Feb 5 2015


  • Activity coefficient model
  • Paraffin hydrocarbon
  • Solid solution
  • Solid-liquid equilibria
  • Wax disappearance temperature

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Physics and Astronomy
  • Physical and Theoretical Chemistry

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