Acetamide, 2-cyano-
- Formula: C3H4N2O
- Molecular weight: 84.0767
- IUPAC Standard InChI: InChI=1S/C3H4N2O/c4-2-1-3(5)6/h1H2,(H2,5,6)
- IUPAC Standard InChIKey: DGJMPUGMZIKDRO-UHFFFAOYSA-N
- CAS Registry Number: 107-91-5
- 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: Cyanacetamide; Cyanoacetamide; Malonamide nitrile; Malonamonitrile; Nitrilomalonamide; 2-Cyanoacetamide; Amid kyseliny kyanoctove; CAA; Kyanacetamid; Propionamide, 3-nitrilo-; USAF KF-14; 3-Nitrilo-propionamide; α-Cyanoacetamide; Cyanoiminoacetic acid; NSC 6285
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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
CAL - James S. Chickos, William E. Acree, Jr., Joel F. Liebman, Students of Chem 202 (Introduction to the Literature of Chemistry), University of Missouri -- St. Louis
DH - Eugene S. Domalski and Elizabeth D. Hearing
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| Tfus | 387.3 | K | N/A | De Wit, Offringa, et al., 1983 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.2 K; TRC |
Enthalpy of sublimation
| ΔsubH (kcal/mol) | Temperature (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 23.8 | 336. | TE,ME | De Wit, Van Miltenburg, et al., 1983 | Based on data from 325. to 348. K.; AC |
Enthalpy of fusion
| ΔfusH (kcal/mol) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 5.19 | 387.3 | Domalski and Hearing, 1996 | AC |
Entropy of fusion
| ΔfusS (cal/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 0.827 | 346.5 | Domalski and Hearing, 1996 | CAL |
| 13.39 | 387.3 |
Enthalpy of phase transition
| ΔHtrs (kcal/mol) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.2868 | 346.5 | crystaline, II | crystaline, I | DeWit, Offringa, et al., 1983 | DH |
| 5.1864 | 387.3 | crystaline, I | liquid | DeWit, Offringa, et al., 1983 | DH |
Entropy of phase transition
| ΔStrs (cal/mol*K) | Temperature (K) | Initial Phase | Final Phase | Reference | Comment |
|---|---|---|---|---|---|
| 0.827 | 346.5 | crystaline, II | crystaline, I | DeWit, Offringa, et al., 1983 | DH |
| 13.4 | 387.3 | crystaline, I | liquid | DeWit, Offringa, et al., 1983 | 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.
De Wit, Offringa, et al., 1983
De Wit, H.G.M.; Offringa, J.C.A.; De Kruif, C.G.; van Miltenburg, J.C.,
Thremodynamic properties of molecular organic crystals containing nitrogen, oxygen and sulfur. III. molar heat capacities measured by DSC. scanning calorimetry.,
Thermochim. Acta, 1983, 65, 43. [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]
Domalski and Hearing, 1996
Domalski, Eugene S.; Hearing, Elizabeth D.,
Heat Capacities and Entropies of Organic Compounds in the Condensed Phase. Volume III,
J. Phys. Chem. Ref. Data, 1996, 25, 1, 1, https://doi.org/10.1063/1.555985
. [all data]
DeWit, Offringa, et al., 1983
DeWit, H.G.M.; Offringa, J.C.A.; De Kruif, C.G.; Van Miltenburg, J.C.,
Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen and sulfur. III. Molar heat capacities measured by differential scanning calorimetry,
Thermochim. Acta, 1983, 65, 43-51. [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 ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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