Vapor pressure of 1,1,1,2,3,3,3-heptafluoropropane

A total of 84 vapor pressure data points for 1,1,1,2,3,3,3-heptafluoropropa ne (HFC-227ea) have been measured in the temperature range from 243 to 375 K. The maximum total pressure uncertainty of these data is estimated to be within +/- 1 kPa. The purity of the sample used in this work is 99.9 mol%. Based on this data set, a vapor pressure equation for HFC-227ea has been de veloped. The root-mean-square (RMS) deviation of the experimental data from the vapor pressure equation is 0.057%. The normal boiling point of HFC-227 ea was also determined. (C) 1999 Elsevier Science B.V. All rights reserved.