Hydrazinecarbothioamide
- Formula: CH5N3S
- Molecular weight: 91.135
- IUPAC Standard InChI: InChI=1S/CH5N3S/c2-1(5)4-3/h3H2,(H3,2,4,5)
- IUPAC Standard InChIKey: BRWIZMBXBAOCCF-UHFFFAOYSA-N
- CAS Registry Number: 79-19-6
- 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: Semicarbazide, thio-; Isothiosemicarbazide; N-Aminothiourea; Thiocarbamoylhydrazine; Thiosemicarbazide; TSC; TSZ; 1-Amino-2-Thiourea; 1-Aminothiourea; 2-Thiosemicarbazide; Semicarbazide, 3-thio-; USAF EK-1275; Rcra waste number P116; Thiocarbamylhydrazine; NSC 2213
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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:
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 |
|---|---|---|---|---|---|
| Tfus | 480.65 | K | N/A | Popp, 1964 | Uncertainty assigned by TRC = 2. K; TRC |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔsubH° | 30.07 ± 0.36 | kcal/mol | C | Alfonso, Gomez, et al., 1982 | AC |
| ΔsubH° | 30.07 ± 0.36 | kcal/mol | C | Gomez and Sabbah, 1982 | ALS |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 30.0669 | 298.15 | Torres Gomez and Sabbah, 1982 | DH |
Entropy of sublimation
| ΔsubS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 100.8 | 298.15 | Torres Gomez and Sabbah, 1982 | DH |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.0167 | 268.9 | crystaline, II | crystaline, I | Nurachmetov, Beremzhanov, et al., 1985 | DH |
| 0.0167 | 268.9 | crystaline, II | crystaline, I | Nurakhmetov, Beremzhanov, et al., 1984 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.0598 | 268.9 | crystaline, II | crystaline, I | Nurachmetov, Beremzhanov, et al., 1985 | DH |
| 0.0598 | 268.9 | crystaline, II | crystaline, I | Nurakhmetov, Beremzhanov, et al., 1984 | DH |
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.
Popp, 1964
Popp, F.D.,
Some Derivatives of 3-Bromobenzaldehyde,
J. Chem. Eng. Data, 1964, 9, 381. [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]
Nurachmetov, Beremzhanov, et al., 1985
Nurachmetov, N.N.; Beremzhanov, B.A.; Abramova, G.V.; Lebedev, B.V.,
Thermodynamics of (thio)amides and their compounds with mineral acids at (0-330)K,
Thermochim. Acta, 1985, 92, 329-332. [all data]
Nurakhmetov, Beremzhanov, et al., 1984
Nurakhmetov, N.N.; Beremzhanov, B.A.; Abramova, G.V.; Lebedev, B.V.,
Thermodynamic properties of acetamide, thiosemicarbazide, and thiourea hydronitrate at (0-330) K, Probl. Kalorim. Khim. Termodin., Dokl. Vses. Konf.,
10th, 1984, 2, 460-2. [all data]
Notes
Go To: Top, Phase change data, References
- Symbols used in this document:
Tfus Fusion (melting) point ΔHtrs Enthalpy of phase transition ΔStrs Entropy of phase transition ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔsubS Entropy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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