Abstract
Infrared absorption cross-section and integrated absorption intensities of HFC-125 (pentafluoroethane) and HFC-143a (1,1,1-trifluoroethane) vapour have been calculated from their infrared spectra in the region 500–1400 and 700–1500 cm −1 for HCF-125 and HCF-143a, respectively. Spectra have been recorded by means of a Fourier transform spectrometer at a maximum resolution of 0.03 cm −1 at six temperatures in the range 203–293 K on the pure vapour and air mixtures at total pressures of 50, 200 and 800 hPa. A comparison between results obtained in this work and all the data reported previously in the literature has been reported.
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