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Thiourea

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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
AC - William E. Acree, Jr., James S. Chickos
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
Tfus452.2KN/AKim, Lee, et al., 1994Uncertainty assigned by TRC = 0.5 K; TRC
Tfus448.05KN/ADonnelly, Drewes, et al., 1990Uncertainty assigned by TRC = 0.2 K; TRC
Tfus453.3KN/AZordan, Hurkot, et al., 1972Uncertainty assigned by TRC = 0.1 K; TRC
Quantity Value Units Method Reference Comment
Deltasub112. ± 2.kJ/molMEDella Gatta, Józwiak, et al., 2000AC
Deltasub111. ± 3.0kJ/molN/AFerro, Martino, et al., 1994AC
Deltasub107.6kJ/molN/ADe Wit, Van Miltenburg, et al., 1983AC
Deltasub112. ± 1.5kJ/molCAlfonso, Gomez, et al., 1982AC
Deltasub112.0 ± 1.5kJ/molCGomez and Sabbah, 1982ALS

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
112.000298.15N/ATorres Gomez and Sabbah, 1982DH
103.9 ± 0.3387.METorres, Hernandez-Contreras, et al., 1999Based on data from 378. - 396. K.; AC
109. ± 2.0408.TEFerro, Martino, et al., 1994AC
106.6384.TE,MEDe Wit, Van Miltenburg, et al., 1983Based on data from 368. - 395. K.; AC

Entropy of sublimation

DeltasubS (J/mol*K) Temperature (K) Reference Comment
375.6298.15Torres Gomez and Sabbah, 1982DH

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
15.64444.7Della Gatta, Józwiak, et al., 2000AC
12.6452.2Dou, Fuess, et al., 1994AC
12.55452.2Kim, Lee, et al., 1994, 2AC

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.

Kim, Lee, et al., 1994
Kim, K.-J.; Lee, C.-H.; Ryu, S.-K., Solubility of Thiourea in C1 to C6 1-Alcohols, J. Chem. Eng. Data, 1994, 39, 228-30. [all data]

Donnelly, Drewes, et al., 1990
Donnelly, J.R.; Drewes, L.A.; Johnson, R.L.; Munslow, W.D.; Knapp, K.K.; Sovocool, G.W., Purity and heat of fusion data for environmental standards as determined by differential scanning calorimetry, Thermochim. Acta, 1990, 167, 2, 155, https://doi.org/10.1016/0040-6031(90)80476-F . [all data]

Zordan, Hurkot, et al., 1972
Zordan, T.A.; Hurkot, D.G.; Peterson, M.; Hepler, L.G., Enthalpies and entropies of melting from differential scanning calorimetry and freezing point depressions: urea, methylurea, 1, 1-dimethylurea, 1, 3- dimethylurea, tetramethylurea, and thiourea, Thermochim. Acta, 1972, 5, 21. [all data]

Della Gatta, Józwiak, et al., 2000
Della Gatta, Giuseppe; Józwiak, Malgorzata; Brunetti, Bruno; Abate, Lorenzo, Enthalpies and entropies of fusion and of sublimation at the temperature 298.15 K of thiourea and sevenN-alkylthioureas, The Journal of Chemical Thermodynamics, 2000, 32, 8, 979-997, https://doi.org/10.1006/jcht.2000.0662 . [all data]

Ferro, Martino, et al., 1994
Ferro, Daniela; Martino, Rosalba; Gatta, Giuseppe Della, Sublimation enthalpies and entropies of thiourea, 1-methyl-2-thiourea, 1,3-dimethyl-2-thiourea, and 1,1,3,3-tetramethyl-2-thiourea, The Journal of Chemical Thermodynamics, 1994, 26, 2, 183-190, https://doi.org/10.1006/jcht.1994.1037 . [all data]

De Wit, Van Miltenburg, et al., 1983
De Wit, H.G.M.; Van Miltenburg, J.C.; De Kruif, C.G., Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen, and sulphur 1. Vapour pressures and enthalpies of sublimation, The Journal of Chemical Thermodynamics, 1983, 15, 7, 651-663, https://doi.org/10.1016/0021-9614(83)90079-4 . [all data]

Alfonso, Gomez, et al., 1982
Alfonso, Luis; Gomez, Torres; Sabbah, Raphaël, Thermodynamique de substances soufrees. IV. Etude thermochimique de la thiouree, de la thiosemicarbazide et de la thiocarbohydrazide, Thermochimica Acta, 1982, 57, 1, 67-81, https://doi.org/10.1016/0040-6031(82)87024-X . [all data]

Gomez and Sabbah, 1982
Gomez, L.A.T.; Sabbah, R., Thermodynamique de substances soufrees. IV. Etude thermochimique de la thiouree, de la thiosemicarbazide et de la thiocarbohydrazide, Thermochim. Acta, 1982, 57, 67-81. [all data]

Torres Gomez and Sabbah, 1982
Torres Gomez, L.A.F.; Sabbah, R., Thermodynamic de substances soufrees. IV. Etude thermochimique de las thiouree, de la thiosemicarbazide et de la thiocarbohydrazide, Thermochim. Acta, 1982, 57, 67-81. [all data]

Torres, Hernandez-Contreras, et al., 1999
Torres, L.A.; Hernandez-Contreras, I.; Guardado, J.A.; Gonzalez, M.G., A quartz crystal microbalance to determine enthalpies of sublimation at intermediate temperatures by the Knudsen effusion method, Meas. Sci. Technol., 1999, 5, 1, 51-54, https://doi.org/10.1088/0957-0233/5/1/009 . [all data]

Dou, Fuess, et al., 1994
Dou, S.-Q.; Fuess, H.; Schmahl, W.; Strauss, R.; Weiss, A., Orientational order-disorder and phase transition in solid trichloromethane sulfonic acid chloride, Cl3CSO2Cl, Z. Naturforsch., A: Phys. Sci., 1994, 49, 4-5, 594. [all data]

Kim, Lee, et al., 1994, 2
Kim, Kwang-Joo; Lee, Choul-Ho; Ryu, Sheung-Kon, Solubility of Thiourea in C1 to C6 1-Alcohols, J. Chem. Eng. Data, 1994, 39, 2, 228-230, https://doi.org/10.1021/je00014a008 . [all data]


Notes

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