Critical Parameters and Vapor Pressure Measurements of Potential Replacements for Chlorofluorocarbons-Four Hydrofluoroketones and a Hydrofluoroamine

摘要

Critical parameters and vapor pressures of five possible replacement compounds for chlorofluorocarbons-four hydrofluoroketones and a hydrofluoroamine-were measured with an accuracy of +-10 mK,+-0.5 kPa,and +-1 kg·m~(-3).Critical temperatures,pressures,and densities were in the ranges from 450 to 500 K,from 2.3 to 3 MPa,and from 450 to 550 kg·m~(-3),respectively.Among the fSMive compounds examined,one of the hydrofluoroketones,HFK-34pc (CHF_2CF_2C(=O)CH_3),was relatively unstable.