Solvent properties of liquid and supercritical hydrofluorocarbons

  title={Solvent properties of liquid and supercritical hydrofluorocarbons},
  author={Andrew P Abbott and Christopher Alan Eardley},
The dipolarity/polarizability parameter {pi}{sup *}, introduced by Kamlet and Taft, was measured for difluoromethane (HFC 32) and pentafluoroethane (HFC 125) and compared with those previously reported for 1,1,1,2-tetrafluoroethane (HFC 134a). This was carried out as a function of temperature and pressure, to cover the liquid and supercritical states over the range 30--130 C and 40--300 bar. The change in dipolarity/polarizability with the reduced density is explained in terms of local density… CONTINUE READING