Pentane, 2,4-dimethyl-

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Condensed phase thermochemistry 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:
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
Δfliquid-235.0 ± 0.96kJ/molCcbProsen and Rossini, 1945ALS
Δfliquid-238. ± 1.kJ/molCcbDavies and Gilbert, 1941ALS
Quantity Value Units Method Reference Comment
Δcliquid-4806.29 ± 0.84kJ/molCcbProsen and Rossini, 1945Corresponding Δfliquid = -234.9 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Δcliquid-4802. ± 1.kJ/molCcbDavies and Gilbert, 1941Corresponding Δfliquid = -238.9 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
liquid303.17J/mol*KN/AHuffman, Gross, et al., 1961DH
liquid291.6J/mol*KN/AHuffman, Parks, et al., 1930Extrapolation below 90 K, 65.90 J/mol*K.; DH

Constant pressure heat capacity of liquid

Cp,liquid (J/mol*K) Temperature (K) Reference Comment
224.22298.15Huffman, Gross, et al., 1961T = 10 to 300 K.; DH
220.9294.4Huffman, Parks, et al., 1930T = 92 to 294 K. Value is unsmoothed experimental datum.; DH

References

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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]

Davies and Gilbert, 1941
Davies, G.F.; Gilbert, E.C., Heats of combustion and formation of the nine isomeric heptanes in the liquid state, J. Am. Chem. Soc., 1941, 63, 2730-2732. [all data]

Huffman, Gross, et al., 1961
Huffman, H.M.; Gross, M.E.; Scott, D.W.; McCullough, I.P., Low temperature thermodynamic properties of six isomeric heptanes, J. Phys. Chem., 1961, 65, 495-503. [all data]

Huffman, Parks, et al., 1930
Huffman, H.M.; Parks, G.S.; Thomas, S.B., Thermal data on organic compounds. VIII. The heat capacities, entropies and free energies of the isomeric heptanes, J. Am. Chem. Soc., 1930, 52, 3241-3251. [all data]


Notes

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