Acetamide - The NIST WebBook

Acetamide

• Formula: C2H5NO
• Molecular weight: 59.0672
• IUPAC Standard InChI: InChI=1S/C2H5NO/c1-2(3)4/h1H3,(H2,3,4) Copy
• IUPAC Standard InChIKey: DLFVBJFMPXGRIB-UHFFFAOYSA-N Copy
• 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
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Condensed phase thermochemistry data
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Phase change data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.

Condensed phase thermochemistry 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: 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

References

Go To: Top, 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.

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]

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]

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]

Notes

Go To: Top, Condensed phase thermochemistry 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)
  ΔcH°solid	Enthalpy of combustion of solid at standard conditions
  ΔfH°solid	Enthalpy of formation of solid at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
• The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
• Customer support for NIST Standard Reference Data products.