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Critical pressure

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Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Data compiled by: Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director

Pc (bar) Reference Comment
49.83Economou, Peters, et al., 1995Uncertainty assigned by TRC = 0.08 bar; TRC
49.80Fransson, Barreau, et al., 1992Uncertainty assigned by TRC = 0.30 bar; TRC
49.871Goodwin, Defibaugh, et al., 1992Uncertainty assigned by TRC = 0.05 bar; Calc. from vapor pressure eq. fit to data at selected critical temperature; TRC
49.75Leu and Robinson, 1992Uncertainty assigned by TRC = 0.10 bar; TRC
49.76Noles and Zollweg, 1992Uncertainty assigned by TRC = 0.15 bar; TRC
50.35Wang, Adcock, et al., 1991Uncertainty assigned by TRC = 0.12 bar; TRC
49.88Kohlen, Kratzke, et al., 1985Uncertainty assigned by TRC = 0.0498 bar; Values selected in accord with PVT study. R22; TRC
49.90Higashi, Okazaki, et al., 1984Uncertainty assigned by TRC = 0.10 bar; TRC
49.78Anonymous, 1968TRC
49.1224Booth and Swinehart, 1935Uncertainty assigned by TRC = 0.0506 bar; TRC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Go To: Top, Critical pressure, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Economou, Peters, et al., 1995
Economou, I.G.; Peters, C.J.; Florusse, L.J.; De Swaan Arons, J., Phase behavior of the binary refrigerant mixture chlorodifluoro-ethane (R22 )-1,1,1,2-tetrafluoro-ethane (R134a): experimental investigation and theoretical modeling using the perturbed-anisotropic-c, Fluid Phase Equilib., 1995, 111, 239-52. [all data]

Fransson, Barreau, et al., 1992
Fransson, E.; Barreau, A.; Vidal, J., Vapor-liquid equilibrium in binary systems of n-pentane + chlorodifluoromethane or + 1,1-difluoroethane, J. Chem. Eng. Data, 1992, 37, 521-5. [all data]

Goodwin, Defibaugh, et al., 1992
Goodwin, A.R.H.; Defibaugh, D.R.; Weber, L.A., The vapor pressure of 1,1,1,2-tetrafluoroethane (R134a) and chlorodifluoromethane (R22), Int. J. Thermophys., 1992, 13, 837-54. [all data]

Leu and Robinson, 1992
Leu, A.D.; Robinson, D.B., High-pressure vapor-liquid equilibrium phase properties of the octafluoropropane (K-218)-chlorodifluoromethane (Freon-22) binary system, J. Chem. Eng. Data, 1992, 37, 7-10. [all data]

Noles and Zollweg, 1992
Noles, J.R.; Zollweg, J.A., Vapor-Liquid Equilibrium for Chlorodifluoromethane + Dimethyl Ether from 283 to 395 K at Pressures to 5.0 MPa, J. Chem. Eng. Data, 1992, 37, 306-10. [all data]

Wang, Adcock, et al., 1991
Wang, B.H.; Adcock, J.L.; Mathur, S.B.; Van Hook, W.A., Vapor pressures, liquid molar volumes, vapor non-idealities, and critical properties of some fluorinated ethers: CF3OCF2OCF3, CF3OCF2CF2H, c-CF2CF2 CF2O, CF3OCF2H, and CF3OCH3; and of CCl3F and CF2CI, J. Chem. Thermodyn., 1991, 23, 699-710. [all data]

Kohlen, Kratzke, et al., 1985
Kohlen, R.; Kratzke, H.; Muller, S., Thermodynamic properties of saturated and compressed liquid difluorochloromethane, J. Chem. Thermodyn., 1985, 17, 1141-1151. [all data]

Higashi, Okazaki, et al., 1984
Higashi, Y.; Okazaki, S.; Takaishi, Y.; Uematsu, M.; Watanabe, K., Measurements of the Vapor-Liquid Coexistence Curve for the Binary R12 + R22 System in the Critical Region, J. Chem. Eng. Data, 1984, 29, 31-6. [all data]

Anonymous, 1968
Anonymous, X., Chemicals and Plastics Physical Properties, 1968, Union Carbide Corp., product bulletin, 1968. [all data]

Booth and Swinehart, 1935
Booth, H.S.; Swinehart, C.F., Critical Constants and Vapor Pressure of Some Gaseous Fluorides of Group IV, J. Am. Chem. Soc., 1935, 57, 1337. [all data]


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