Thiourea

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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
Δfsolid-21.3 ± 0.1kcal/molCcrGomez and Sabbah, 1982ALS
Δfsolid-21.5kcal/molCcbBecker and Roth, 1934hf_H2SO4.10,000H2O=-900.752 kJ/mol; ALS
Quantity Value Units Method Reference Comment
Δcsolid-353.26 ± 0.11kcal/molCcrGomez and Sabbah, 1982ALS
Δcsolid-352.40 ± 0.50kcal/molCcrSunner, 1946Reanalyzed by Cox and Pilcher, 1970, Original value = -354.62 kcal/mol; ALS
Δcsolid-355.7 ± 0.2kcal/molCcbBecker and Roth, 1934hf_H2SO4.10,000H2O=-900.752 kJ/mol; ALS
Quantity Value Units Method Reference Comment
solid,1 bar27.68cal/mol*KN/AWestrum and Chang, 1967DH

Constant pressure heat capacity of solid

Cp,solid (cal/mol*K) Temperature (K) Reference Comment
23.16298.15Torres Gomez and Sabbah, 1982Cp data given as 1.273 J/g*K. Data from 67WES/CHA.; DH
23.16298.15Westrum and Chang, 1967Temperature range.; DH

Phase change data

Go To: Top, Condensed 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:
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
Δsub26.8 ± 0.5kcal/molMEDella Gatta, Józwiak, et al., 2000AC
Δsub26.5 ± 0.72kcal/molN/AFerro, Martino, et al., 1994AC
Δsub25.72kcal/molN/ADe Wit, Van Miltenburg, et al., 1983AC
Δsub26.8 ± 0.36kcal/molCAlfonso, Gomez, et al., 1982AC
Δsub26.77 ± 0.36kcal/molCGomez and Sabbah, 1982ALS

Enthalpy of sublimation

ΔsubH (kcal/mol) Temperature (K) Method Reference Comment
26.7686298.15N/ATorres Gomez and Sabbah, 1982DH
24.83 ± 0.07387.METorres, Hernandez-Contreras, et al., 1999Based on data from 378. to 396. K.; AC
26.1 ± 0.48408.TEFerro, Martino, et al., 1994AC
25.48384.TE,MEDe Wit, Van Miltenburg, et al., 1983Based on data from 368. to 395. K.; AC

Entropy of sublimation

ΔsubS (cal/mol*K) Temperature (K) Reference Comment
89.77298.15Torres Gomez and Sabbah, 1982DH

Enthalpy of fusion

ΔfusH (kcal/mol) Temperature (K) Reference Comment
3.738444.7Della Gatta, Józwiak, et al., 2000AC
3.01452.2Dou, Fuess, et al., 1994AC
3.000452.2Kim, 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, Condensed phase thermochemistry data, Phase change data, Notes

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

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]

Becker and Roth, 1934
Becker, G.; Roth, W.A., Zur bestimmung der verbrennungswarme von organischen schwefelverbindunge, Z. Phys. Chem., 1934, 169, 287-296. [all data]

Sunner, 1946
Sunner, S., Determination of combustion heats of organo-sulphur compounds, Svensk. Kim. Tidr., 1946, 58, 71-81. [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]

Westrum and Chang, 1967
Westrum, E.F., Jr.; Chang, E., Properties thermiques cryogenetiques de la thio-uree ferroelectrique, Colloq. Internat. du, 1967, C.N.R.S. (156), 163-173. [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]

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]

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

Go To: Top, Condensed phase thermochemistry data, Phase change data, References