In this work, the experimental density data were reported for six fatty acid methyl esters, including methyl butyrate, methyl valerate, methyl caproate, methyl pelargonate, methyl heptanoate, and methyl caprylate. The densities were measured from (293.15 to 363.15) K and pressures up to 60 MPa by a vibrating-tube densimeter. The relative uncertainty of the measurement is estimated less than 0.001 with a confidence level of 0.95. The high pressure densities were correlated with a Tait-type equation. The overall average relative deviation between experimental data and calculated results from Tait equation for the six fatty acid esters is 0.010 %. The derived thermodynamic properties, such as isobaric thermal expansivity and isothermal compressibility, were obtained from the experimental density results. Additionally, the molecular parameters of the PC-SAFT equation of state for the studied esters were obtained based on the corresponding vapor pressures and liquid densities at 0.1 MPa. The PC-SAFT equation was used to predict the high pressure densities of the esters, and good agreements were observed.
Compounds
#
Formula
Name
1
C5H10O2
methyl butanoate
2
C6H12O2
methyl pentanoate
3
C7H14O2
methyl hexanoate
4
C8H16O2
methyl heptanoate
5
C9H18O2
methyl octanoate
6
C10H20O2
methyl nonanoate
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.