Urethane
- Formula: C3H7NO2
- Molecular weight: 89.0932
- IUPAC Standard InChI: InChI=1S/C3H7NO2/c1-2-6-3(4)5/h2H2,1H3,(H2,4,5)
- IUPAC Standard InChIKey: JOYRKODLDBILNP-UHFFFAOYSA-N
- CAS Registry Number: 51-79-6
- 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: Carbamic acid, ethyl ester; Ethyl carbamate; Ethyl urethane; O-Ethylurethane; Leucethane; NSC 746; Pracarbamine; Urethan; NH2COOC2H5; A 11032; Aethylcarbamat; Aethylurethan; Carbamidsaeure-aethylester; Estane 5703; Ethyl urethan; Leucothane; Pracarbamin; U-Compound; Uretan; X 41; Ethylester kyseliny karbaminove; Rcra waste number U238; Uretan etylowy; Ethyl ester of carbamic acid
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Gas phase thermochemistry 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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔfH°gas | -446.3 | kJ/mol | Cm | Bernard, Boukari, et al., 1976 | hfusion=20.9±0.8 kJ/mol |
Condensed phase thermochemistry data
Go To: Top, Gas 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:
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 |
|---|---|---|---|---|---|
| ΔfH°liquid | -497.3 | kJ/mol | Cm | Bernard, Boukari, et al., 1976 | hfusion=20.9±0.8 kJ/mol; ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔfH°solid | -517.1 | kJ/mol | Ccb | Schmidt and Becker, 1933 | ALS |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔcH°solid | -1663.8 | kJ/mol | Ccb | Schmidt and Becker, 1933 | ALS |
Constant pressure heat capacity of solid
| Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
|---|---|---|---|
| 156.43 | 300. | DeWit, DeKruif, et al., 1983 | T = 90 to 330 K.; DH |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Bernard, Boukari, et al., 1976
Bernard, M.A.; Boukari, Y.; Busnot, F.,
Thermodynamic study of methyl and ethyl carbamates and their eutectic,
Thermochim. Acta, 1976, 16, 267-275. [all data]
Schmidt and Becker, 1933
Schmidt, V.A.; Becker, F.,
Die Bildungswarme von Nitrocellulofen, Nitroglycerin und anderen widuigen Beltandteilen von Treibmitteln,
Z. Gesamte Schiess Sprengstoffwes., 1933, 33, 280-282. [all data]
DeWit, DeKruif, et al., 1983
DeWit, H.G.M.; DeKruif, C.G.; Van Miltenburg, J.C.,
Thermodynamic properties of molecular organic crystals containing organic crystals containing nitrogen, oxygen, and sulfur. II. Molar heat capacities of eight compounds by adiabatic calorimetry,
J. Chem. Thermodynam., 1983, 15, 891-902. [all data]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°liquid Enthalpy of formation of liquid at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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