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


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.

Phase change 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:
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Deltasub31. ± 1.kcal/molTE,GSBardi, Bencivenni, et al., 1980Based on data from 452. - 587. K.; AC
Deltasub30.23 ± 0.53kcal/molVNabavian, Sabbah, et al., 1977ALS
Deltasub20.kcal/molVClark, Peschel, et al., 1965ALS

Enthalpy of sublimation

DeltasubH (kcal/mol) Temperature (K) Method Reference Comment
29.95 ± 0.05425.QR,MEde Barros, Medina, et al., 2006Based on data from 315. - 435. K.; AC
24.21399. - 411.MESzterner, Kaminski, et al., 2002AC
30.35 ± 0.48439.TEBrunetti, Piacente, et al., 2000Based on data from 394. - 494. K.; AC
31.21 ± 0.96519.ME,TEBardi, Bencivenni, et al., 1980Based on data from 452. - 587. K.; AC
28.80 ± 0.31403.QRTeplitsky, Yanson, et al., 1980Based on data from 378. - 428. K.; AC
29.09425.MSYanson, Teplitsky, et al., 1979AC
32. ± 2.523.HSANowak, Szczepaniak, et al., 1978Based on data from 500. - 545. K.; AC
30.23 ± 0.53440.CNabavian, Sabbah, et al., 1977, 2AC
28.8 ± 1.2426.LEYanson and Teplitskii, 1975Based on data from 393. - 458. K. See also Yanson, Verkin, et al., 1974.; AC


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.

Bardi, Bencivenni, et al., 1980
Bardi, G.; Bencivenni, L.; Ferro, D.; Martini, B.; Nunziante Cesaro, S.; Teghil, R., Thermodynamic study of the vaporization of uracil, Thermochimica Acta, 1980, 40, 2, 275-282, https://doi.org/10.1016/0040-6031(80)87229-7 . [all data]

Nabavian, Sabbah, et al., 1977
Nabavian, P.M.; Sabbah, R.; Chastel, R.; Laffitte, M., Thermodynamique de composes azotes. II. Etude thermochimique des acides aminobenzoiques, de la pyrimidine, de l'uracile et de la thymine., J. Chim. Phys., 1977, 74, 115-126. [all data]

Clark, Peschel, et al., 1965
Clark, L.B.; Peschel, G.G.; Tinoco, I., Jr., Vapor spectra and heats of vaporization of some purine and pyrmidine bases, J. Phys. Chem., 1965, 69, 3615. [all data]

de Barros, Medina, et al., 2006
de Barros, A.L.F.; Medina, A.; Zappa, F.; Pereira, J.M.; Bessa, E.; Martins, M.H.P.; Coelho, L.F.S.; Wolff, W.; de Castro Faria, N.V., A simple experimental arrangement for measuring the vapour pressures and sublimation enthalpies by the Knudsen effusion method: Application to DNA and RNA bases, Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2006, 560, 2, 219-223, https://doi.org/10.1016/j.nima.2006.01.026 . [all data]

Szterner, Kaminski, et al., 2002
Szterner, Piotr; Kaminski, Miron; Zielenkiewicz, Anna, Vapour pressures, molar enthalpies of sublimation and molar enthalpies of solution in water of five halogenated derivatives of uracil, The Journal of Chemical Thermodynamics, 2002, 34, 7, 1005-1012, https://doi.org/10.1006/jcht.2000.0987 . [all data]

Brunetti, Piacente, et al., 2000
Brunetti, Bruno; Piacente, Vincenzo; Portalone, Gustavo, Sublimation Enthalpies of Some Methyl Derivatives of Uracil from Vapor Pressure Measurements, J. Chem. Eng. Data, 2000, 45, 2, 242-246, https://doi.org/10.1021/je9902802 . [all data]

Teplitsky, Yanson, et al., 1980
Teplitsky, A.B.; Yanson, I.K.; Glukhova, O.T.; Zielenkiwicz, A.; Zielenkiewicz, W.; Wierzchowski, K.L., Thermochemistry of aqueous solutions of alkylated nucleic acid bases, Biophysical Chemistry, 1980, 11, 1, 17-21, https://doi.org/10.1016/0301-4622(80)85003-4 . [all data]

Yanson, Teplitsky, et al., 1979
Yanson, I.K.; Teplitsky, A.B.; Sukhodub, L.F., Experimental studies of molecular interactions between nitrogen bases of nucleic acids, Biopolymers, 1979, 18, 5, 1149-1170, https://doi.org/10.1002/bip.1979.360180510 . [all data]

Nowak, Szczepaniak, et al., 1978
Nowak, M.J.; Szczepaniak, K.; Barski, A.; Shugar, D.Z., Z. Naturforsch. C, 1978, 33C, 876. [all data]

Nabavian, Sabbah, et al., 1977, 2
Nabavian, M.; Sabbah, R.; Chastel, R.; Laffitte, M., J. Chim. Phys.Phys.-Chim. Biol., 1977, 74, 115. [all data]

Yanson and Teplitskii, 1975
Yanson, I.K.; Teplitskii, A.B., Zh. Fiz. Khim., 1975, 49, 736. [all data]

Yanson, Verkin, et al., 1974
Yanson, I.K.; Verkin, B.I.; Shklyarevskii, O.I.; Teplitskii, A.B., Stud. Biophys., 1974, 46, 1, 29. [all data]


Go To: Top, Phase change data, References