Speed of sound measurements were carried out in liquid Tris(2-ethylhexyl) trimellitate (TOTM) at pressures up to 200 MPa along isotherms ranging from (293.15 to 373.15) K in order to report data of density and its derivatives. The measurements were performed with a pulse echo technique working at 3 MHz. Additional density and heat capacity measurements were carried out at atmospheric pressure in order to initiate the estimation procedure of volumetric properties from speed of sound integration. Results were compared with density measurements performed with a U-tube densimeter at pressures up to 140 MPa on the same sample. Finally, an equation that correlates density and its derivatives within their estimated uncertainties is given.
Compounds
#
Formula
Name
1
C33H54O6
tris(2-ethylhexyl) trimellitate
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
Speed of sound, m/s ; Liquid
Pressure, kPa; Liquid
Temperature, K; Liquid
Frequency, MHz; Liquid
Liquid
Pulse-echo method
120
POMD
1
Mass density, kg/m3 ; Liquid
Pressure, kPa; Liquid
Temperature, K; Liquid
Liquid
Vibrating tube method
135
POMD
1
Molar heat capacity at constant pressure, J/K/mol ; Liquid