Density, Speed of Sound, and Derived Thermodynamic Properties of Ionic Liquids over an Extended Pressure Range. 4. [C3mim][NTf2] and [C5mim][NTf2]
Esperanca, J. M. S. S.[Jose M. S. S.], Visak, Z. P.[Zoran P.], Plechkova, N. V.[Natalia V.], Seddon, K. R.[Kenneth R.], Guedes, H. J. R.[Henrique J. R.], Rebelo, L. P. N.[Luis P. N.]
The current study focuses on 1-propyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide, [C3mim][NTf2], and 1-pentyl-3-methylimidazolium bis(trifluoromethylsulfonyl)amide, [C5mim][NTf2]. The objective is to study the influence of pressure as well as that of the cation s alkyl chain length on several properties of this type of ionic liquids. Speed of propagation of ultrasound waves and densities in pure ionic liquids as a function of temperature and pressure have been determined. Other thermodynamic properties such as compressibilities and expansivities have been obtained. Speed of sound measurements have been carried out in broad ranges of temperature (298 less than T/K less than 338) and pressure (0.1 less than p/MPa less than 200). A novel high-pressure ultrasonic cell was designed and built to allow for precise speed of sound measurements in liquids. The uncertainty of the speed of sound measurements is 0.05 %. A detailed description of the cell is presented. Density measurements have been performed over a broad range of temperature (298 less than T/K less than 333) and pressure (0.1 less than p/MPa less than 60) using a vibrating-tube densimeter. The density overall uncertainty is 0.02 %.
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.