431-89-0 1,1,1,2,3,3,3-Heptafluoropropane

Temperature Pressure Density Volume Int. energy Enthalpy Entropy C, CF 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.s 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 an interim equation from Lemmon, E. W., personal communication (NIST, Boulder, CO, 2006). Validated equations for the viscosity and thermal conductivity are not currently available for this fluid. 

The uncertainties in the equation of state are 0.2% in density, except in a small region close to the critical point, 0.2% in vapor pressure between 250 and 360 K, 0.4% in vapor pressure outsicle this region, 1% in heat capacities (with increasing uncertainties in the critical region and at higher temperatures), 0.1% in the vapor-phase speed of sound, and 3% in the liquid-phase speed of sound. 

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J. C.Ravensberg, D.J.Alexander, D.Borkhataria, G.M.Rusch, and B.Schmit. 2000. Human safely and pharmacokinetics of the CFC alternative propellants HFC 134a (1,1,1,2-tetrafluoroethane) and HFC 227 (1,1,1,2,3,3,3-heptafluoropropane) following whole-body exposure. Regul. Toxicol. Pharmacol. 32 22-35. 

This mechanism was suggested for the reaction of 1,3-dichlorotetra-fluoropropene with F which gives 1,1,1,2,3,3,3-heptafluoropropane, by nucleophilic addition of F to the substitution product equations 25-27) (Miller et al., 1960). 

This nucleophilic addition of hydrogen fluoride can be effected by ammonium fluoride, potassium fluoride, or tetraethyl- or tetrabutylammonium fluoridc in formamide or chloroform.For example, formation of 1,1,1,2,3,3,3-heptafluoropropane. ... 

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