Vapor pressures and vaporization enthalpies of both squalane and squalene are evaluated by correlation gas chromatography using n-alkanes as standards. Vapor pressures as a function of temperature from T = (298.15-600) K are fit to a second order polynomial. Vaporization enthalpies of (134.4 +- 2.4 and 139.8 +- 2.4) kJ mol-1 and vapor pressures of p = ((15 +- 5.4) and (3.7 +- 1.3))*10-7 Pa at T = 298.15 K are evaluated for squalane and squalene, respectively. Vapor pressures are compared with existing literature data. Enthalpies of interaction with the column are evaluated for all analytes and are found to be endothermic at the mean temperatures of the chromatography.
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
Molar enthalpy of vaporization or sublimation, kJ/mol ; Liquid
Temperature, K; Liquid
Liquid
Gas
Correlation gas chromatography
1
POMD
1
Vapor or sublimation pressure, kPa ; Metastable liquid
Temperature, K; Metastable liquid
Metastable liquid
Gas
Gas chromatography
32
POMD
2
Molar enthalpy of vaporization or sublimation, kJ/mol ; Liquid
Temperature, K; Liquid
Liquid
Gas
Correlation gas chromatography
1
POMD
2
Vapor or sublimation pressure, kPa ; Metastable liquid