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PHYSICAL PROPERTY DATA ON FLUORINATED PROPANES AND BUTANES AS CFC AND HCFC ALTERNATIVES
Citation:
Beyerlein, A., D. DesMarteau, S. Hwang, N. Smith, AND P. Joyner. PHYSICAL PROPERTY DATA ON FLUORINATED PROPANES AND BUTANES AS CFC AND HCFC ALTERNATIVES. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/A-92/150.
Description:
The paper discusses results of the measurement and estimation of the physical properties of fluorinated propane derivatives as second generation alternatives for currently used CFC and HCFC chemicals. ne fluorinated ether was also studied. NOTE: lthough synthesis of the derivatives was also studied, it is not reported here.) otal of 22 compounds were investigated with boiling points of -34.6 to 76.7 C. he measured properties presented for these compounds are: elting point, boiling point, vapor pressure below the boiling point, heat of vaporization, critical properties (temperature, density, and pressure), liquid densities, and liquid-phase heat capacities. easured vapor pressures are reported from below the boiling point to the critical point for two of these compounds: F3OCF2H (b.p. = 34.6 C and Tc = 80.7 C) and CF3CHFCF2H (b.p. = 6.5 C and Tc = 141.1 C). apor pressures and liquid-phase dansities were also measured for CFC-12 in order to judge the accuracy of the experimental methods used. he measured vapor pressures were also compared with vapor pressures estimated using modified corresponding states methods to evaluate the accuracy of the estimation methods.