INFRARED BAND STRENGTHS AND THEIR TEMPERATURE-DEPENDENCE OF THE HYDROHALOCARBONS HFC-134A, HFC-152A, HCFC-22, HCFC-123 AND HCFC-142B

The absolute strengths of the IR absorption bands of five halocarbons, proposed as substitutes of chlorofluorocarbons, have been measured at 293, 273 and 233 K in the wavelength region 600-1500 cm-1. The band strengths were derived from measurements performed using an FT-IR spectrometer operating at 0.1 cm-1 instrumental resolution. The values obtained are compared to those from previous studies. Only a slight temperature dependence was observed, indicating a small increase of the band strengths at decreasing temperatures.