Home Symbol which looks like a small house Up Solid circle with an upward pointer in it

Pentane, 2,2,4-trimethyl-

Data at NIST subscription sites:

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.


Condensed phase thermochemistry data

Go To: Top, References, Notes

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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafliquid-259.3 ± 1.3kJ/molCcbProsen and Rossini, 1945ALS
Quantity Value Units Method Reference Comment
Deltacliquid-5461.3 ± 1.3kJ/molCcbProsen and Rossini, 1945Corresponding «DELTA»fliquid = -259.2 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid328.03J/mol*KN/APitzer K.S., 1940DH
liquid314.6J/mol*KN/AParks, Huffman, et al., 1930Extrapolation below 90 K, 66.53 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
242.49298.15Costas, Huu, et al., 1988DH
242.49298.15Perez-Casas, Aicart, et al., 1988DH
239.71298.15Shiohama, Ogawa, et al., 1988DH
237.85293.15Kalali, Kohler, et al., 1987T = 293.15, 313.15 K.; DH
238.871298.15Fortier and Benson, 1976Average of three values.; DH
237.8298.15Rajagopal and Subrahmanyam, 1974T = 298.15 to 323.15 K.; DH
237.8298.15Subrahmanyam and Rajagopal, 1973T = 298 to 323 K.; DH
233.7300.Auerbach, Sage, et al., 1950T = 300 to 366 K. Cp given as 0.4980 Btu/lb*R at 80 F.; DH
238.57298.15Osborne and Ginnings, 1947T = 283 to 318 K.; DH
241.00301.9Pitzer K.S., 1940T = 15 to 318 K. Value is unsmoothed experimental datum.; DH
233.9295.2Parks, Huffman, et al., 1930T = 88 to 295 K. Value is unsmoothed experimental datum.; DH

References

Go To: Top, Condensed phase thermochemistry data, Notes

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

Prosen and Rossini, 1945
Prosen, E.J.; Rossini, F.D., Heats of combustion and formation of the paraffin hydrocarbons at 25° C, J. Res. NBS, 1945, 263-267. [all data]

Pitzer K.S., 1940
Pitzer K.S., The thermodynamics of n-heptane and 2,2,4-trimethylpentane, including heat capacities, heats of fusion and vaporization and entropies, J. Am. Chem. Soc., 1940, 62, 1224-1227. [all data]

Parks, Huffman, et al., 1930
Parks, G.S.; Huffman, H.M.; Thomas, S.B., Thermal data on organic compounds. VI. The heat capacities, entropies and free energies of some saturated, non-benzenoid hydrocarbons, J. Am. Chem. Soc., 1930, 52, 1032-1041. [all data]

Costas, Huu, et al., 1988
Costas, M.; Huu, V.T.; Patterson, D.; Caceres-Alonso, M.; Tardajos, G.; Aicart, E., Liquid structure and second-order mixing functions for l-chloronaphthalene with linear and branched alkanes, J. Chem. Soc., Faraday Trans., 1988, 1 84(5), 1603-1616. [all data]

Perez-Casas, Aicart, et al., 1988
Perez-Casas, S.; Aicart, E.; Trojo, L.M.; Costas, M., Excess heat capacity. Chlorobenzene-2,2,4,4,6,8,8-heptamethylnonane, Int. Data Ser., Sel. Data Mixtures, 1988, (2)A, 123. [all data]

Shiohama, Ogawa, et al., 1988
Shiohama, Y.; Ogawa, H.; Murakami, S.; Fujihara, I., Excess molar isobaric heat capacities and isentropic compressibilities of (cis- or trans-decalin + benzene or toluene or iso-octane or n-heptane) at 298.15 K, J. Chem. Thermodynam., 1988, 20, 1183-1189. [all data]

Kalali, Kohler, et al., 1987
Kalali, H.; Kohler, F.; Svejda, P., Excess properties of the mixture bis(2-dichlorethyl)ether (chlorex) + 2,2,4-trimethylpentane (isooctane), Monatsh. Chem., 1987, 118, 1-18. [all data]

Fortier and Benson, 1976
Fortier, J.-L.; Benson, G.C., Excess heat capacities of binary liquid mixtures determined with a Picker flow calorimeter, J. Chem. Thermodynam., 1976, 8, 411-423. [all data]

Rajagopal and Subrahmanyam, 1974
Rajagopal, E.; Subrahmanyam, S.V., Excess function of VE,(dVE/dp)T, and CpE of isooctane + benzene and + toluene, J. Chem. Thermodynam., 1974, 6, 873-876. [all data]

Subrahmanyam and Rajagopal, 1973
Subrahmanyam, S.V.; Rajagopal, E., Excess thermodynamic functions of the systems isooctane + carbon tetrachloride and isooctane + cyclohexane, Z. Phys. Chem. [NF], 1973, 85, 256-268. [all data]

Auerbach, Sage, et al., 1950
Auerbach, C.E.; Sage, B.H.; Lacey, W.N., Isobaric heat capacities at bubble point, Ind. Eng. Chem., 1950, 42, 110-113. [all data]

Osborne and Ginnings, 1947
Osborne, N.S.; Ginnings, D.C., Measurements of heat of vaporization and heat capacity of a number of hydrocarbons, J. Res. NBS, 1947, 39, 453-477. [all data]


Notes

Go To: Top, Condensed phase thermochemistry data, References