Standard Reference Data Program

Data Gateway

Online Databases

Chemistry WebBook

Acetic acid

• Formula: C₂H₄O₂
• Molecular weight: 60.0520
• IUPAC International Chemical Identifer:
  • InChI=1/C2H4O2/c1-2(3)4/h1H3,(H,3,4)
  • Download the identifier in a file.
• CAS Registry Number: 64-19-7
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d Mol file.
• Other names: Ethanoic acid; Ethylic acid; Glacial acetic acid; Methanecarboxylic acid; Vinegar acid; CH3COOH; component of Aci-Jel; Acetasol; Acide acetique; Acido acetico; Azijnzuur; Essigsaeure; Octowy kwas; Acetic acid, glacial; Kyselina octova; UN 2789; UN 2790; Aci-jel; Shotgun; TCLP extraction fluid 2; Vinegar
• Information on this page:
  • Phase change data
  • References
  • Notes / Error Report
• Other data available:
  • Gas phase thermochemistry data
  • Condensed phase thermochemistry data
  • Reaction thermochemistry data: reactions 1 to 50, reactions 51 to 75
  • Henry's Law data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • Vibrational and/or electronic energy levels
  • Gas Chromatography
• Data at other public NIST sites:
  • Computational Chemistry Comparison and Benchmark Database
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 3.5
• Options:
  • Switch to calorie-based units

Data at NIST subscription sites:

• NIST X-ray Photoelectron Spectroscopy Database, version 4.0
• NIST / TRC Web Thermo Tables, "lite" edition (evaluated thermophysical and thermochemical data)
• NIST / TRC Web Thermo Tables, professional edition (evaluated 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.

Phase change data

Go To: Top, References, Notes / Error Report

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, M. Frenkel director
ALS - H.Y. Afeefy, J.F. Liebman, and S.E. Stein
C - J.S. Chickos
DH - E.S. Domalski and E.D. Hearing

Enthalpy of vaporization

Enthalpy of vaporization

Δ_vapH° = A exp(-αT_r) (1 − T_r)^β
    Δ_vapH° = Enthalpy of vaporization (kJ/mol)
    T_r = reduced temperature (T / T_c)

View plot Requires a Java capable browser.

Antoine Equation Parameters

log₁₀(P) = A − (B / (T + C))
    P = vapor pressure (bar)
    T = temperature (K)

View plot Requires a Java capable browser.

Enthalpy of sublimation

Enthalpy of fusion

Entropy of fusion

Enthalpy of phase transition

Entropy of phase transition

References

Go To: Top, Phase change data, Notes / Error Report

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Wilhoit, Chao, et al., 1985
Wilhoit, R.C.; Chao, J.; Hall, K.R., Thermodynamic Properties of Key Organic Compounds in the Carbon Range C1 to C4. Part 1. Properties of Condensed Phases, J. Phys. Chem. Ref. Data, 1985, 14, 1.  [all data]

Martin and Andon, 1982
Martin, J.F.; Andon, R.J.L., Thermodynamic properties of organic oxygen compounds. Part LII. Molar heat capacity of ethanoic, propanoic, and butanoic acids., J. Chem. Thermodyn., 1982, 14, 679-88.  [all data]

Parks and Kelley, 1925
Parks, G.S.; Kelley, K.K., Thermal Data on Organic Compounds II. The Heat Capacities of Five Organic Compounds. The Entropies and Free Energies of Some Homologous Series of Aliphatic Compounds, J. Am. Chem. Soc., 1925, 47, 2089-97.  [all data]

Andereya and Chase, 1990
Andereya, E.; Chase, J.D., Chem. Eng. Technol., 1990, 13, 304-12.  [all data]

D'Souza and Teja, 1987
D'Souza, R.; Teja, A.S., The prediction of the vapor pressures of carboxylic acids, Chem. Eng. Commun., 1987, 61, 13.  [all data]

Ambrose, Ellender, et al., 1977
Ambrose, D.; Ellender, J.H.; Sprake, C.H.S.; Townsend, R., Thermo. Prop. of Org. Oxygen Compounds XLV. The Vapor Pressure of Acetic Acid, J. Chem. Thermodyn., 1977, 9, 735.  [all data]

Young, 1910
Young, S., The Internal Heat of Vaporization constants of thirty pure substances, Sci. Proc. R. Dublin Soc., 1910, 12, 374.  [all data]

Young, 1891
Young, S., J. Chem. Soc., 1891, 59, 903.  [all data]

Vandana and Teja, 1995
Vandana, V.; Teja, A.S., The critical temperatures and densities of acetic acid-water mixtures, Fluid Phase Equilib., 1995, 103, 113-18.  [all data]

Majer and Svoboda, 1985
Majer, V.; Svoboda, V., Enthalpies of Vaporization of Organic Compounds: A Critical Review and Data Compilation, Blackwell Scientific Publications, Oxford, 1985, 300.  [all data]

Konicek and Wadso, 1970
Konicek, J.; Wadso, I., Enthalpies of vaporization of organic compounds. VII. Some carboxylic acids, Acta Chem. Scand., 1970, 24, 2612-26.  [all data]

McDonald, Shrader, et al., 1959
McDonald, R.A.; Shrader, S.A.; Stull, D.R., Vapor Pressures and Freezing Points of 30 Organics, J. Chem. Eng. Data, 1959, 4, 4, 311-313.  [all data]

Airoldi and DeSouza, 1987
Airoldi, C.; DeSouza, A.G., J. Chem. Soc., Dalton Trans., 1987, 12, 2955.  [all data]

Stephenson and Malanowski, 1987
Stephenson, R.M.; Malanowski, S., Handbook of the Thermodynamics of Organic Compounds, Elsevier: New York, 1987.  [all data]

Calis-Van Ginkel, Calis, et al., 1978
Calis-Van Ginkel, C.H.D.; Calis, G.H.M.; Timmermans, C.W.M.; DeKruif, C.G.; Oonk, H.A.J., J. Chem. Thermodyn., 1978, 10, 1083.  [all data]

Parks and Kelley, 1925, 2
Parks, G.S.; Kelley, K.K., Thermal data on organic compounds. II. The heat capacities of five organic compounds. The entropies and free energies of some homologous series of aliphatic compounds, J. Am. Chem. Soc., 1925, 47, 2089-2097.  [all data]

Pickering, 1895
Pickering, S.U., A comparison of some properties of acetic acid and its chloro- and bromo-derivatives, J. Chem. Soc., 1895, 67, 664-684.  [all data]

Martin and Andon, 1982, 2
Martin, J.F.; Andon, R.J.L., Thermodynamic properties of organic oxygen compounds. Part LII. Molar heat capacity of ethanoic, propanoic, and butanoic acids, J. Chem. Thermodynam., 1982, 14, 679-688.  [all data]

Notes / Error Report

Go To: Top, Phase change data, References

• 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.
• If you believe that this page may contain an error, please fill out the error report form for this page.

© 1991, 1994, 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2005 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved.

Standard Reference Data Program

Data Gateway

Online Databases

Chemistry WebBook

If you have comments or questions about this site, please contact us.