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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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director

Pc (bar) Reference Comment
36.4 ± 0.5Daubert, 1996 
36.40Younglove and Ely, 1987Uncertainty assigned by TRC = 0.02 bar; TRC
36.290Levelt Sengers, Kamgar-Parsi, et al., 1983Uncertainty assigned by TRC = 0.10 bar; TRC
36.306Waxman and Gallagher, 1983Uncertainty assigned by TRC = 0.60 bar; TRC
36.40Goodwin and Haynes, 1982Uncertainty assigned by TRC = 0.30 bar; TRC
36.33Connolly, 1962Uncertainty assigned by TRC = 0.8106 bar; TRC
36.48Beattie, Edwards, et al., 1949Uncertainty assigned by TRC = 0.608 bar; TRC
36.90Gilliland and Scheeline, 1940Uncertainty assigned by TRC = 0.4137 bar; TRC
37.0249Seibert and Burrell, 1915Uncertainty assigned by TRC = 0.2666 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.

Daubert, 1996
Daubert, T.E., Vapor-Liquid Critical Properties of Elements and Compounds. 5. Branched Alkanes and Cycloalkanes, J. Chem. Eng. Data, 1996, 41, 365-372. [all data]

Younglove and Ely, 1987
Younglove, B.A.; Ely, J.F., Thermophysical Properties of Fluids II. Methane, Ethane, Propane, Isobutane, and Normal Butane, J. Phys. Chem. Ref. Data, 1987, 16, 577. [all data]

Levelt Sengers, Kamgar-Parsi, et al., 1983
Levelt Sengers, J.M.H.; Kamgar-Parsi, B.; Sengers, J.V., Thermodnamic Properties of Isobutane in the Critical Region, J. Chem. Eng. Data, 1983, 28, 354-362. [all data]

Waxman and Gallagher, 1983
Waxman, M.; Gallagher, J.S., Thermodynamic Properties of Isobutane for Temperatures from 250 to 600 K and Pressures from 0.1 to 40 MPa, J. Chem. Eng. Data, 1983, 28, 224. [all data]

Goodwin and Haynes, 1982
Goodwin, R.D.; Haynes, W.M., Thermophysical Properties of Propane from 85 to 700 K at Pressures to 70 MPa, NBS Monogr. (U. S.) No. 170, 249 pp., 1982. [all data]

Connolly, 1962
Connolly, J.F., Ideality of n-Butane:Isobutane Solutions, J. Phys. Chem., 1962, 66, 1082. [all data]

Beattie, Edwards, et al., 1949
Beattie, J.A.; Edwards, D.G.; Marple, S., The Vapor Pressure, Orthobaric Liquid Density, and Critical Constants of Isobutane, J. Chem. Phys., 1949, 17, 576. [all data]

Gilliland and Scheeline, 1940
Gilliland, E.R.; Scheeline, H.W., High Pressure Vapor-Liquid Equilibrium. For the Systems Propylene-Isobutane isobutane and propane + hydrogen sulfide, Ind. Eng. Chem., 1940, 32, 48. [all data]

Seibert and Burrell, 1915
Seibert, F.M.; Burrell, G.A., The Critical Constants of Normal Butane, Iso-butane and Propylene and Their Vapor Pressures at Temperatures Bewtween 0 deg.C and 120 deg.C, J. Am. Chem. Soc., 1915, 37, 2683-91. [all data]


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