1,2-dichlorotetrafluoroethane

Temperature Pressure Density Volume Int. energy Enthalpy Entropy C, CT Sound speed Joule-Thomson 

The values in these tables were generated from the NIST REFPROP software (Lemmon, E. W., McLinden, M. O., and Huber, M. L., NIST Standard Reference Database 23 Reference Fluid Thermodynamic and Transport Properties—REFPROP, National Institute of Standards and Technology, Standard Reference Data Program, Gaithersburg, Md., 2002, Version 7.1). The primary source for the thermodynamic properties is Platzer, B., Polt, A., and Maurer, G., Thermophysical Properties of Refrigerants, Springer-Verlag, Berlin, 1990. Validated equations for the viscosity and thermal conductivity are not currently available for this fluid. 

The uncertainty in density is 0.2% up to 400 K and 1% at higher temperatures. The vapor pressure uncertainty is 1.5%. In the liquid phase, the uncertainty in isobaric heat capacity is 3%. 

op Pressure, Ib/in abs. Volume, ftVlb Enthalpy, Btu/lb Entropy, Btu/(lb)(°E)  

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By varying the temperature and the ratio of hydrogen fluonde to tetrachloroethene, the ratio of chloropentafluoroethane to dichlorotetrafluoroethanes can be varied at will The ratio of 1,2-dichlorotetrafluoroethane to 1,1-dichlorotetra-fluorocthane depends upon the temperature of the catalyst, higher temperatures favoring the latter, with yields that can vary from 10 to 50% depending upon operating condidons. 

The violent or explosive reactions which carbon tetrachloride, chloroform, etc., exhibit on direct local contact with gaseous fluorine [1], can be moderated by suitable dilution, catalysis and diffused contact [2], Combustion of perfluorocy-clobutane-fluorine mixtures was detonative between 9.04 and 57.9 vol% of the halocarbon [3], Iodoform reacts very violently with fluorine owing to its high iodine content [4], Explosive properties of mixtures with 1,2-dichlorotetrafluoroethane have been studied [5],... 

Dichlorotetrafluoroethane is assumed to arise in the products of photolysis by the interaction of the two chlorodifluoromethyl radicals. 

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