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n-Hexadecanoic acid

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Gas 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 by: Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Deltafgas-730.0 ± 5.5kJ/molN/ALebedeva, 1964Value computed using «DELTA»fHliquid° value of -848.4±2.2 kj/mol from Lebedeva, 1964 and «DELTA»vapH° value of 118.4±5.0 kj/mol from n-alkanoic correlation.

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, 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-848.4 ± 2.2kJ/molCcbLebedeva, 1964Reanalyzed by Cox and Pilcher, 1970, Original value = -841.0 ± 1.9 kJ/mol; Hfusion =13.86±0.15 kcal/mol; ALS
Quantity Value Units Method Reference Comment
Deltacliquid-9977.2 ± 1.6kJ/molCcbAdriaanse, Dekker, et al., 1965Hfusion=53.4kJ/mol; Corresponding «DELTA»fliquid = -892.2 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Deltacliquid-10028.6 ± 1.9kJ/molCcbLebedeva, 1964Hfusion =13.86±0.15 kcal/mol; Corresponding «DELTA»fliquid = -840.82 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
Deltacsolid-9977.6 ± 8.8kJ/molCcbSwain, Silbert, et al., 1964Corresponding «DELTA»fsolid = -892.0 kJ/mol (simple calculation by NIST; no Washburn corrections); ALS
Quantity Value Units Method Reference Comment
solid,1 bar452.37J/mol*KN/AWirth, Droege, et al., 1956DH
solid,1 bar438.65J/mol*KN/AWard and Singleton, 1952Extrapolation below 90 K, 106.7 J/mol*K.; DH
solid,1 bar475.7J/mol*KN/AParks, Kelley, et al., 1929Extrapolation below 90 K, 146.4 J/mol*K. Revision of previous data.; DH
solid,1 bar543.5J/mol*KN/AParks and Kelley, 1925Extrapolation below 90 K, 214.2 J/mol*K.; DH

Constant pressure heat capacity of solid

Cp,solid (J/mol*K) Temperature (K) Reference Comment
463.36298.15Schaake, van Miltenburg, et al., 1982T = 80 to 345 K.; DH
678.373.Pacor, 1967DH
460.66298.15Wirth, Droege, et al., 1956T = 15 to 302 K.; DH
448.298.Ward and Singleton, 1952T = 183 to 365 K. Three temperatures, each for solid and liquid and equations. C form.; DH
462.3292.5Parks and Kelley, 1925T = 88 to 293 K. Value is unsmoothed experimental datum.; DH

References

Go To: Top, Gas phase thermochemistry data, 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.

Lebedeva, 1964
Lebedeva, N.D., Heats of combustion of monocarboxylic acids, Russ. J. Phys. Chem. (Engl. Transl.), 1964, 38, 1435-1437. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

Adriaanse, Dekker, et al., 1965
Adriaanse, N.; Dekker, H.; Coops, J., Heats of combustion of normal saturated fatty acids and their methyl esters, Rec. Trav. Chim. Pays/Bas, 1965, 84, 393-407. [all data]

Swain, Silbert, et al., 1964
Swain, H.A., Jr.; Silbert, L.S.; Miller, J.G., The heats of combustion of aliphatic long chain peroxyacids, t-butyl peroxyesters, and related acids and esters, J. Am. Chem. Soc., 1964, 86, 2562-2566. [all data]

Wirth, Droege, et al., 1956
Wirth, H.E.; Droege, J.W.; Wood, J.H., Low temperature heat capacity of palmitic acid and methyl palmitate, J. Phys. Chem., 1956, 60, 917-919. [all data]

Ward and Singleton, 1952
Ward, T.L.; Singleton, W.S., Physical properties of fatty acids. II. Some dilatometric and thermal properties of palmitic acid, J. Phys. Chem., 1952, 56, 696-698. [all data]

Parks, Kelley, et al., 1929
Parks, G.S.; Kelley, K.K.; Huffman, H.M., Thermal data on organic compounds. V. A revision of the entropies and free energies of nineteen organic compounds, J. Am. Chem. Soc., 1929, 51, 1969-1973. [all data]

Parks and Kelley, 1925
Parks, G.S.; Kelley, K.K., Thermal data on organic compounds. II. The heat capacities of five organic compounds. The entropies and free energies of some homologous series of aliphatic compounds, J. Am. Chem. Soc., 1925, 47, 2089-2097. [all data]

Schaake, van Miltenburg, et al., 1982
Schaake, R.C.F.; van Miltenburg, J.C.; De Kruif, C.G., Thermodynamic properties of the normal alkanoic acids. II. Molar heat capacities of seven even-numbered normal alkanoic acids, J. Chem. Thermodynam., 1982, 14, 771-778. [all data]

Pacor, 1967
Pacor, P., Applicability of the DuPont 900 DTA apparatus in quantitative differential thermal analysis, Anal. Chim. Acta, 1967, 37, 200-208. [all data]


Notes

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References