Lq. Sun et al., VISCOSITY OF DIFLUOROMETHANE AND PENTAFLUOROETHANE ALONG THE SATURATION LINE, Journal of chemical and engineering data, 41(2), 1996, pp. 292-296
The paper reports new measurements of the viscosity of liquid difluoro
methane (HFC-32) over the temperature range 233.15 K to 333.15 K and t
he viscosity of pentafluoroethane (HFC-125) over the temperature range
233.15 K to 328.15 K along the saturation line. The viscosities were
measured in a calibrated capillary viscometer. A new method was develo
ped to operate the viscometer and to analyze the measured data. The un
certainty of the results is estimated to be no more than 3%. The resul
ts were correlated as a function of temperature.