Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

Thermophysical properties of two PAG-derivative lubricants from high pressure acoustic measurements

Lopez, E. A., Daridon, J. L.[Jean-Luc], Baylaucq, A.[Antoine], Fernandez, J.[Josefa]
J. Chem. Eng. Data 2003, 48, 5, 1208-1213
ABSTRACT
The speed of sound in two Poly Alkylene Glycol derivatives (triethylene glycol dimethyl ether and tetraethylene glycol dimethyl ether) were measured, at temperatures from 293.15 to 353.15 K and pressures from atmospheric up to 100 MPa, using a pulse technique operating at 3 MHz, with an estimated error of less than 10.2 per cent. From these measurements, and using literature density and heat capacities data at 0.1 MPa and at several temperatures, PVT surface and isentropic and isothermal compressibilities of each compound were estimated in the same experimental ranges of pressure and temperature.
Compounds
# Formula Name
1 C8H18O4 2,5,8,11-tetraoxadodecane
2 C10H22O5 2,5,8,11,14-pentaoxapentadecane
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
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pulse-echo method
  • 77
  • POMD
  • 2
  • Speed of sound, m/s ; Liquid
  • Temperature, K; Liquid
  • Pressure, kPa; Liquid
  • Liquid
  • Pulse-echo method
  • 77