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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
21.1 ± 0.5Ambrose and Tsonopoulos, 1995 
20.03Knipmeyer, Archer, et al., 1989Uncertainty assigned by TRC = 1.00 bar; TRC
20.99Rosenthal and Teja, 1989Uncertainty assigned by TRC = 0.20 bar; TRC
21.04Teja, Lee, et al., 1989TRC
20.99Brunner, 1988Uncertainty assigned by TRC = 0.05 bar; Visual, optical cell 30cm high. P transducer cal. vs PB.; TRC
21.10Brunner, 1987Uncertainty assigned by TRC = 0.021 bar; Visual, optical cell 30cm high. P transducer cal. vs PB.; TRC
21.967Cholpan, Sperkach, et al., 1981Uncertainty assigned by TRC = 0.0021 bar; TRC
21.229Kay and Pak, 1980Uncertainty assigned by TRC = 0.0021 bar; Visual, Table 2, mercury interface at room temperature; TRC
21.39Pak and Kay, 1972Uncertainty assigned by TRC = 0.1034 bar; corrected for vapor pressure of Hg; TRC
21.04Ambrose and Townsend, 1968Uncertainty assigned by TRC = 0.10 bar; TRC
20.90Altschul, 1893Uncertainty assigned by TRC = 0.4903 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.

Ambrose and Tsonopoulos, 1995
Ambrose, D.; Tsonopoulos, C., Vapor-Liquid Critical Properties of Elements and Compounds. 2. Normal Alkenes, J. Chem. Eng. Data, 1995, 40, 531-546. [all data]

Knipmeyer, Archer, et al., 1989
Knipmeyer, S.E.; Archer, D.G.; Chirico, R.D.; Gammon, B.E.; Hossenlopp, I.A.; Nguyen, A.; Smith, N.K.; Steele, W.V.; Strube, M.M., High-temperature enthalpy and critical property measurements using differential scanning calorimeter, Fluid Phase Equilib., 1989, 52, 185. [all data]

Rosenthal and Teja, 1989
Rosenthal, D.J.; Teja, A.S., The Critical Properties of n-Alkanes Using a Low-Residence Time Flow Apparatus, AIChE J., 1989, 35, 1829. [all data]

Teja, Lee, et al., 1989
Teja, A.S.; Lee, R.J.; Rosenthal, D.J.; Anselme, M.J., Correlation of the Critical Properties of Alkanes and Alkanols in 5th IUPAC Conference on Alkanes and AlkanolsGradisca, 1989. [all data]

Brunner, 1988
Brunner, E., Fluid Mixtures at High Pressures VI. Phase Separation and Critical Phenomena in 18 (n-Alkane + Ammonia) and 4 (n-Alkane _ Methanol) Mixtures, J. Chem. Thermodyn., 1988, 20, 273. [all data]

Brunner, 1987
Brunner, E., Fluid mixtures at high pressures VI. Phase separation and critical phenomina in 18 binary mixtures containing either pyridine or ethanoic acid, J. Chem. Thermodyn., 1987, 19, 823. [all data]

Cholpan, Sperkach, et al., 1981
Cholpan, P.F.; Sperkach, V.S.; Garkusha, L.N., Propagation of Ultrasound Waves in Isoviscous Solutions of n-Paraffins, Fiz. Zhidk. Sostoyaniya, 1981, 9, 79. [all data]

Kay and Pak, 1980
Kay, W.B.; Pak, S.C., Determination of the critical constants of high-boiling hydrocarbons. Experiments with gallium as a containing fluid, J. Chem. Thermodyn., 1980, 12, 673. [all data]

Pak and Kay, 1972
Pak, S.C.; Kay, W.B., Gas-Liquid Critical Temperatures of Mixtures. Benzene + n-Alkanes and Hexafluorobenzene + n-Alkanes, Ind. Eng. Chem. Fundam., 1972, 11, 255. [all data]

Ambrose and Townsend, 1968
Ambrose, D.; Townsend, R., Critical Temperatures and Pressures of Some Alkanes, Trans. Faraday Soc., 1968, 64, 2622. [all data]

Altschul, 1893
Altschul, M., The critical values of some organic compounds, Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1893, 11, 577. [all data]


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