Surface tension of ethyl fluoride (HFC161) from (233 to 373) K

The surface tension of ethyl fluoride (R161) was measured over the temperature range from (233 to 373) K with a differential capillary rise method, together with the surface tension of isobutane (R600a) measured in the temperature range from (275 to 343) K for verifying the experimental system. The temperature and surface tension uncertainties were estimated to be within ±20 mK and ±0.2 mN m−1 respectively. The surface tension values of R161 were correlated as a function of temperature with an average absolute deviation of 0.043 mN m−1.