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Octane, 2-methyl-

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Phase change data

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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:
BS - Robert L. Brown and Stephen E. Stein
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Kenneth Kroenlein director
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil416.1 ± 0.9KAVGN/AAverage of 14 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus192.75KN/AMears, Fookson, et al., 1950Uncertainty assigned by TRC = 0.15 K; TRC
Tfus193.05KN/AWhitmore and Southgate, 1938Uncertainty assigned by TRC = 0.2 K; TRC
Tfus192.66KN/AWhite and Glasgow, 1937Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Tc582.8 ± 0.1KN/ADaubert, 1996 
Tc582.87KN/AAbara, Jennings, et al., 1988Uncertainty assigned by TRC = 0.3 K; TRC
Tc582.87KN/AKay and Hissong, 1969Uncertainty assigned by TRC = 0.2 K; TRC
Quantity Value Units Method Reference Comment
Pc22.8 ± 0.2atmN/ADaubert, 1996 
Pc22.80atmN/AAbara, Jennings, et al., 1988Uncertainty assigned by TRC = 0.49 atm; TRC
Pc22.80atmN/AKay and Hissong, 1969Uncertainty assigned by TRC = 0.2041 atm; TRC
Quantity Value Units Method Reference Comment
Deltavap10.7kcal/molN/AReid, 1972See also Labbauf, Greenshields, et al., 1961.; AC

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
10.3320.AStephenson and Malanowski, 1987Based on data from 305. - 417. K.; AC

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
4.300192.8Helgeson, Owens, et al., 1998AC

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:


References

Go To: Top, Phase change data, Notes

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

Mears, Fookson, et al., 1950
Mears, T.W.; Fookson, A.; Pomerantz, P.; Rich, E.H.; Dussinger, C.S.; Howard, F.L., Syntheses and Properties of Two Olefins, Six Paraffins, and Their Intermediates, J. Res. Natl. Bur. Stand. (U. S.), 1950, 44, 299. [all data]

Whitmore and Southgate, 1938
Whitmore, F.C.; Southgate, H.A., The Nonanes. 2-Methyl, 3-Ethyl, 2,3-dimethylheptane and 2,2,4,4-tetramethylpentane, J. Am. Chem. Soc., 1938, 60, 2571. [all data]

White and Glasgow, 1937
White, J.D.; Glasgow, A.R., Separation of the Three Methyl Octanes from Midcontinent Petroleum, J. Res. Natl. Bur. Stand. (U. S.), 1937, 19, 423. [all data]

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]

Abara, Jennings, et al., 1988
Abara, J.A.; Jennings, D.W.; Kay, W.B.; Teja, A.S., Phase Behavior in the Critical Region of Six Binary Mixtures of 2-Methylalkanes, J. Chem. Eng. Data, 1988, 33, 242. [all data]

Kay and Hissong, 1969
Kay, W.B.; Hissong, D.W., The Critical Properties of Hydrocarbon Mixtures constants, Proc. - Am. Pet. Inst., Div. Refin., 1969, 49, 13. [all data]

Reid, 1972
Reid, Robert C., Handbook on vapor pressure and heats of vaporization of hydrocarbons and related compounds, R. C. Wilhort and B. J. Zwolinski, Texas A Research Foundation. College Station, Texas(1971). 329 pages.$10.00, AIChE J., 1972, 18, 6, 1278-1278, https://doi.org/10.1002/aic.690180637 . [all data]

Labbauf, Greenshields, et al., 1961
Labbauf, A.; Greenshields, J.B.; Rossini, F.D., Heats of formation, combustion, and vaporization of the 35 nonanes and 75 decanes, J. Chem. Eng. Data, 1961, 6, 261-263. [all data]

Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw, Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2 . [all data]

Helgeson, Owens, et al., 1998
Helgeson, Harold C.; Owens, Christine E.; Knox, Annette M.; Richard, Laurent, Calculation of the Standard Molal Thermodynamic Properties of Crystalline, Liquid, and Gas Organic Molecules at High Temperatures and Pressures, Geochimica et Cosmochimica Acta, 1998, 62, 6, 985-1081, https://doi.org/10.1016/S0016-7037(97)00219-6 . [all data]


Notes

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