Thiourea, tetramethyl-
- Formula: C5H12N2S
- Molecular weight: 132.227
- IUPAC Standard InChIKey: MNOILHPDHOHILI-UHFFFAOYSA-N
- CAS Registry Number: 2782-91-4
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: Urea, 1,1,3,3-tetramethyl-2-thio-; Basthioryl; N,N,N',N'-Tetramethylthiourea; Tetramethylthiourea; ((CH3)2N)2CS; 1,1,3,3-Tetramethyl-2-thiourea; 1,1,3,3-Tetramethylthiourea; NA-101; TMTU; Urea, thio-, tetramethyl-; NSC 102499; Thiourea, N,N,N',N'-tetramethyl-; tetramethyl-2-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:
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 |
---|---|---|---|---|---|
ΔsubH° | 85. ± 3. | kJ/mol | ME | Della Gatta, Józwiak, et al., 2000 | AC |
ΔsubH° | 84.0 | kJ/mol | N/A | Ferro, Martino, et al., 1994 | AC |
ΔsubH° | 83.0 ± 0.5 | kJ/mol | C | Murata, Sakiyama, et al., 1985 | AC |
ΔsubH° | 83.03 ± 0.20 | kJ/mol | C | Inagaki, Murata, et al., 1982 | ALS |
ΔsubH° | 83.0 ± 0.2 | kJ/mol | C | Inagaki, Murata, et al., 1982 | AC |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
83. ± 3.0 | 333. | TE | Ferro, Martino, et al., 1994 | AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
22.14 | 350.4 | DSC | Della Gatta, Józwiak, et al., 2000 | AC |
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.
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]
Murata, Sakiyama, et al., 1985
Murata, S.; Sakiyama, M.; Seki, S.,
Sublimation calorimetric studies using a calvet microcalorimeter,
Thermochimica Acta, 1985, 88, 1, 121-126, https://doi.org/10.1016/0040-6031(85)85419-8
. [all data]
Inagaki, Murata, et al., 1982
Inagaki, S.; Murata, S.; Sakiyama, M.,
Thermochemical studies on thioacetamide and tetramethylthiourea. Estimation of stablization energies due to interaction between thiocarbonyl group and neighboring nitrogen atom,
Bull. Chem. Soc. Jpn., 1982, 55, 2808-2813. [all data]
Notes
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- Symbols used in this document:
ΔfusH Enthalpy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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