Speed of sound, density, and compressibility of alkyl-benzenes as a function of pressure and temperature: Heptadecylbenzene and octadecylbenzene

Sébastien Dutour (1) , Hervé Carrier (1) , Bernard Lagourette (1) , Guanghua Gao (2) , Jean-Luc Daridon (1)

1 TEFC - Thermodynamique et Energétique des fluides complexes
2 Department of Chemical Engineering

Measurements of speed of sound were carried out in liquid heptadecylbenzene and octadecylbenzene at pressures from atmospheric up to 150 MPa in the temperature range 303 to 383 K using a pulse technique operating at 3 MHz. Additional density measurements were performed up to 60 MPa. From these measurements, the density was evaluated up to 150 MPa and the isentropic and isothermal compressibilities were determined in the same P and T domain. The results were fitted to a Tait-like equation.

Mots clés: Engineering controlled terms: Compressibility; Density (specific gravity); Functions; Integration; Molecular weight; Polynomials; Solidification; Specific heat; Temperature; Thermal expansion; Thermodynamic properties; Ultrasonic velocity Engineering uncontrolled terms: Bioblock thermostat; Chronometry; Heptadecylbenzene; Isobaric expansion; Octadecylbenzene Engineering main heading: Benzene

Sébastien Dutour, Hervé Carrier, Bernard Lagourette, Guanghua Gao, Jean-Luc Daridon. Speed of sound, density, and compressibility of alkyl-benzenes as a function of pressure and temperature: Heptadecylbenzene and octadecylbenzene. Journal of Chemical and Engineering Data, 2004, 59 (4), pp.983-987. ⟨10.1021/je049973v⟩. ⟨hal-00687178⟩