Acetamide
- Formula: C2H5NO
- Molecular weight: 59.0672
- IUPAC Standard InChIKey: DLFVBJFMPXGRIB-UHFFFAOYSA-N
- CAS Registry Number: 60-35-5
- 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: Acetic acid amide; Ethanamide; Methanecarboxamide; CH3CONH2; NCI-C02108; Amid kyseliny octove
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change 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 | -238.33 ± 0.78 | kJ/mol | Ccb | Barnes and Pilcher, 1975 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change 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°solid | -315.6 ± 0.82 | kJ/mol | Ccr | Nurachmetov, Beremzhanov, et al., 1985 | see Nurakhmeta, Beremzhanov, et al., 1984; ALS |
ΔfH°solid | -310.1 | kJ/mol | Ccb | Ciocazanu, Dogaru, et al., 1976 | ALS |
ΔfH°solid | -316.99 ± 0.70 | kJ/mol | Ccb | Barnes and Pilcher, 1975 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
ΔcH°solid | -1186.03 ± 0.82 | kJ/mol | Ccr | Nurachmetov, Beremzhanov, et al., 1985 | see Nurakhmeta, Beremzhanov, et al., 1984; ALS |
ΔcH°solid | -1191.5 | kJ/mol | Ccb | Ciocazanu, Dogaru, et al., 1976 | ALS |
ΔcH°solid | -1184.60 ± 0.69 | kJ/mol | Ccb | Barnes and Pilcher, 1975 | ALS |
Quantity | Value | Units | Method | Reference | Comment |
S°solid,1 bar | 115.0 | J/mol*K | N/A | Nurachmetov, Beremzhanov, et al., 1985 | DH |
S°solid,1 bar | 115.0 | J/mol*K | N/A | Nurakhmetov, Beremzhanov, et al., 1984 | DH |
Constant pressure heat capacity of solid
Cp,solid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
86.65 | 298. | Emons, Naumann, et al., 1986 | T = 298 to 400 K. Cp data given at 298 K as 1.467 kJ/kg*K (extrapolated). Cp = 1.481 + 0.0069(T-300) kJ/kg*K (300 to 330).; DH |
91.27 | 298.15 | Nurachmetov, Beremzhanov, et al., 1985 | T = 13 to 330 K.; DH |
91.27 | 298.15 | Nurakhmetov, Beremzhanov, et al., 1984 | T = 8 to 330 K.; DH |
90.00 | 300. | DeWit, DeKruif, et al., 1983 | T = 90 to 360 K.; DH |
90.3 | 298.15 | Skold, Suurkuusk, et al., 1976 | DH |
66.5 | 293. | Campbell and Campbell, 1940 | DH |
Phase change data
Go To: Top, Gas phase thermochemistry data, 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:
BS - Robert L. Brown and Stephen E. Stein
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 |
---|---|---|---|---|---|
Tboil | 494.4 ± 0.5 | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 352. ± 9. | K | AVG | N/A | Average of 6 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 353.33 | K | N/A | De Wit, De Kruif, et al., 1983 | Uncertainty assigned by TRC = 0.02 K; TRC |
Quantity | Value | Units | Method | Reference | Comment |
ΔsubH° | 77.2 | kJ/mol | N/A | De Wit, Van Miltenburg, et al., 1983 | AC |
ΔsubH° | 78.66 ± 0.33 | kJ/mol | V | Barnes and Pilcher, 1975 | ALS |
ΔsubH° | 80. ± 1. | kJ/mol | N/A | Morawetz, 1971 | AC |
ΔsubH° | 80.3 ± 1.3 | kJ/mol | C | Wadsö, Borgen, et al., 1965 | AC |
ΔsubH° | 80. ± 1. | kJ/mol | C | Wadso, 1965 | ALS |
Reduced pressure boiling point
Tboil (K) | Pressure (bar) | Reference | Comment |
---|---|---|---|
365. | 0.007 | Buckingham and Donaghy, 1982 | BS |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
63.8 | 396. | A | Stephenson and Malanowski, 1987 | Based on data from 381. to 492. K.; AC |
60.9 | 353. | N/A | Stull, 1947 | Based on data from 338. to 495. K.; AC |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
338. to 495. | 5.3711 | 2413.323 | -45.444 | Stull, 1947 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
77.8 | 284. | TE,ME | De Wit, Van Miltenburg, et al., 1983 | Based on data from 273. to 293. K.; AC |
77.4 ± 0.4 | 323. | GS | Davies, Jones, et al., 1959 | Based on data from 298. to 349. K. See also Stephenson and Malanowski, 1987.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
15.500 | 354.05 | Nikolic, Tripkovic, et al., 1989 | DH |
12.522 to 12.877 | 342.15 | Emons, Naumann, et al., 1986 | DH |
15.606 | 353.5 | Emons, Naumann, et al., 1986 | DH |
15.590 | 353.33 | DeWit, DeKruif, et al., 1983 | DH |
15.6 | 353. | Domalski and Hearing, 1996 | AC |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
36.6 to 37.6 | 342.15 | Emons, Naumann, et al., 1986 | DH |
44.15 | 353.5 | Emons, Naumann, et al., 1986 | DH |
44.1 | 353.33 | DeWit, DeKruif, et al., 1983 | DH |
References
Go To: Top, Gas phase thermochemistry data, 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.
Barnes and Pilcher, 1975
Barnes, D.S.; Pilcher, G.,
Enthalpies of combustion of ethanamide, propanamide, and butanamide,
J. Chem. Thermodyn., 1975, 7, 377-382. [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]
Nurakhmeta, Beremzhanov, et al., 1984
Nurakhmeta, N.N.; Beremzhanov, B.A.; Abramova, G.V.; Lebedev, B.V.,
Thermodynamic properties of acetamide, thio-semicarbazide, and thiourea hydronitrate at (0-330) K,
Probl. Kalorim. Khim. Termodin., Dokl. Vses. Konf., 10th, 1984, 2, 460-462. [all data]
Ciocazanu, Dogaru, et al., 1976
Ciocazanu, I.; Dogaru, V.; Zavoianu, D.,
Structure and reactivity of amides. Concerning the heats of combustion and formation of some unsaturated α, β amides derived from acetamide,
Rev. Chim. (Bucharest), 1976, 27, 4-6. [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]
Emons, Naumann, et al., 1986
Emons, H.H.; Naumann, R.; Jahn, K.; Flammersheim, H.J.,
Thermal properties of acetamide in the temperature range from 298 K to 400 K,
Thermochim. Acta, 1986, 104, 127-137. [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]
Skold, Suurkuusk, et al., 1976
Skold, R.; Suurkuusk, J.; Wadso, I.,
Thermochemistry of solutions of biochemical model compounds. 7. Aqueous solutions of some amides, t-butanol, and pentanol,
J. Chem. Thermodynam., 1976, 8, 1075-1080. [all data]
Campbell and Campbell, 1940
Campbell, A.N.; Campbell, A.J.R.,
The heats of solution, heats of formation,
specific heats and equilibrium diagrams of certain molecular compounds. J. Am. Chem. Soc., 1940, 62, 291-297. [all data]
De Wit, De Kruif, et al., 1983
De Wit, H.G.M.; De Kruif, C.G.; Van Miltenburg, J.C.,
Thermodynamic properties of molecular organic crystals containing nitrogen, oxygen, and sulfur II. Molar heat capacities of eight compounds by adiabatic calorimetry,
J. Chem. Thermodyn., 1983, 15, 9, 891, https://doi.org/10.1016/0021-9614(83)90095-2
. [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]
Morawetz, 1971
Morawetz, E.,
, Ph.D. Dissertation, University of Lund, 1971. [all data]
Wadsö, Borgen, et al., 1965
Wadsö, Ingemar; Borgen, Gerd L.; Sørensen, Georg Ole; Olsen, Gert; Jansen, Gert,
Thermochemical Properties of Diacetamide, N-Butyldiacetamide and N-Phenyldiacetamide.,
Acta Chem. Scand., 1965, 19, 1079-1087, https://doi.org/10.3891/acta.chem.scand.19-1079
. [all data]
Wadso, 1965
Wadso, I.,
Thermochemical properties of diacetimide, N-butyldiacetimide and N-phenyldiacetimide,
Acta Chem. Scand., 1965, 19, 1079-1087. [all data]
Buckingham and Donaghy, 1982
Buckingham, J.; Donaghy, S.M.,
Dictionary of Organic Compounds: Fifth Edition, Chapman and Hall, New York, 1982, 1. [all data]
Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
Handbook of the Thermodynamics of Organic Compounds, 1987, https://doi.org/10.1007/978-94-009-3173-2
. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
Ind. Eng. Chem., 1947, 39, 4, 517-540, https://doi.org/10.1021/ie50448a022
. [all data]
Davies, Jones, et al., 1959
Davies, M.; Jones, A.H.; Thomas, G.H.,
The lattice energies of the straight-chain primary amides,
Trans. Faraday Soc., 1959, 55, 1100. [all data]
Nikolic, Tripkovic, et al., 1989
Nikolic, R.; Tripkovic, J.; Kerridge, D.H.,
Phase chages in acetamide-salt systems: Melting points and latent heat of fusion of pure acetamide and acetamide-ammonium chloride,
Thermochim. Acta, 1989, 146, 353-360. [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]
Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, References
- Symbols used in this document:
Cp,solid Constant pressure heat capacity of solid S°solid,1 bar Entropy of solid at standard conditions (1 bar) Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature ΔcH°solid Enthalpy of combustion of solid at standard conditions ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfH°solid Enthalpy of formation of solid at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔsubH Enthalpy of sublimation ΔsubH° Enthalpy of sublimation at standard conditions ΔvapH Enthalpy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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