Isopropyl acetate

• Formula: C₅H₁₀O₂
• Molecular weight: 102.1317
• IUPAC Standard InChI: InChI=1S/C5H10O2/c1-4(2)7-5(3)6/h4H,1-3H3 Copy

  
• IUPAC Standard InChIKey: JMMWKPVZQRWMSS-UHFFFAOYSA-N Copy
• CAS Registry Number: 108-21-4
• 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, 1-methylethyl ester; Acetic acid, isopropyl ester; 2-Acetoxypropane; 2-Propyl acetate; CH3COOCH(CH3)2; Acetate d'isopropyle; Isopropile(acetato di); Isopropyl ethanoate; Isopropyl (acetate d'); Isopropylacetaat; Isopropylacetat; Isopropylester kyseliny octove; UN 1220; Isopropyl ester of acetic acid; sec-Propyl acetate; Acetic acid, 2-propyl ester; 1-Methylethyl acetate; NSC 9295
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• Information on this page:
  • Condensed phase thermochemistry data
  • Phase change data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Henry's Law data
  • Ion clustering data
  • IR Spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Condensed phase thermochemistry data

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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

Constant pressure heat capacity of liquid

Phase change data

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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
BS - Robert L. Brown and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Enthalpy of vaporization

Antoine Equation Parameters

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

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Gas phase ion energetics data

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

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₅H₉O₂^- +  =

By formula: C₅H₉O₂^- + H⁺ = C₅H₁₀O₂

Mass spectrum (electron ionization)

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

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

References

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

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

Butwill and Rockenfeller, 1970
Butwill, M.E.; Rockenfeller, J.D., Heats of combustion and formation of ethyl acetate and isopropyl acetate, Thermochim. Acta, 1970, 1, 289-295. [all data]

Schjanberg, 1935
Schjanberg, E., Die Verbrennungswarmen und die Refraktionsdaten einiger chlorsubstituierter Fettsauren und Ester., Z. Phys. Chem. Abt. A, 1935, 172, 197-233. [all data]

Fuchs, 1979
Fuchs, R., Heat capacities of some liquid aliphatic, alicyclic, and aromatic esters at 298.15 K, J. Chem. Thermodyn., 1979, 11, 959-961. [all data]

Timmermans, 1952
Timmermans, J., Freezing points of organic compounds. VVI New determinations., Bull. Soc. Chim. Belg., 1952, 61, 393. [all data]

Timmermans, 1922
Timmermans, J., Investigation of the Freezing Point of Organic Substances VII, Bull. Soc. Chim. Belg., 1922, 31, 389. [all data]

Quadri and Kudchadker, 1991
Quadri, S.K.; Kudchadker, A.P., Measurement of the critical temperatures and critical pressures of some thermally stable or mildly unstable esters, ketones, and ethers, J. Chem. Thermodyn., 1991, 23, 129-34. [all data]

Ambrose, Ellender, et al., 1981
Ambrose, D.; Ellender, J.H.; Gundry, H.A.; Lee, D.A.; Townsend, R., Thermodynamic properties of organic oxygen compounds. LI. The vapour pressures of some esters and fatty acids, J. Chem. Thermodyn., 1981, 13, 795. [all data]

Chickos, Hosseini, et al., 1995
Chickos, James S.; Hosseini, Sarah; Hesse, Donald G., Determination of vaporization enthalpies of simple organic molecules by correlations of changes in gas chromatographic net retention times, Thermochimica Acta, 1995, 249, 41-62, https://doi.org/10.1016/0040-6031(95)90670-3 . [all data]

Wadsö, Murto, et al., 1966
Wadsö, Ingemar; Murto, Maija-Leena; Bergson, Göran; Ehrenberg, L.; Brunvoll, J.; Bunnenberg, E.; Djerassi, Carl; Records, Ruth, Heats of Vaporization for a Number of Organic Compounds at 25 degrees C., Acta Chem. Scand., 1966, 20, 544-552, https://doi.org/10.3891/acta.chem.scand.20-0544 . [all data]

Wadso, 1966
Wadso, I., Acta Chem. Scand., 1966, 20, 544. [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]

Geiseler, Quitzsch, et al., 1973
Geiseler, G.; Quitzsch, K.; Hofmann, H.-P.; Pfestorf, R.Z., Z. Phys. Chem. (Leipzig), 1973, 252, 170. [all data]

Haggerty and Weiler, 1929
Haggerty, Cecil J.; Weiler, Joseph F., THE VAPOR PRESSURE OF ISOPROPYL ACETATE ¹, J. Am. Chem. Soc., 1929, 51, 6, 1623-1626, https://doi.org/10.1021/ja01381a001 . [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Benoit, Harrison, et al., 1977
Benoit, F.M.; Harrison, A.G.; Lossing, F.P., Hydrogen migrations in mass spectrometry III-Energetics of formation of [R'CO₂H₂]⁺ in the mass spectra of R'CO₂R, Org. Mass Spectrom., 1977, 12, 78. [all data]

Sweigart and Turner, 1972
Sweigart, D.A.; Turner, D.W., Lone pair orbitals and their interactions studied by photoelectron spectroscopy. I. Carboxylic acids and their derivatives, J. Am. Chem. Soc., 1972, 94, 5592. [all data]

Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

Harrison and Jones, 1965
Harrison, A.G.; Jones, E.G., Rearrangement reactions following electron impact on ethyl and isopropyl esters, Can. J. Chem., 1965, 43, 960. [all data]

Brion and Dunning, 1963
Brion, C.E.; Dunning, W.J., Electron impact studies of simple carboxylic esters, J. Chem. Soc. Faraday Trans., 1963, 59, 647. [all data]

Harrison, Ivko, et al., 1966
Harrison, A.G.; Ivko, A.; Van Raalte, D., Energetics of formation of some oxygenated ions and the proton affinities of carbonyl compounds, Can. J. Chem., 1966, 44, 1625. [all data]

Haas, Giblin, et al., 1998
Haas, G.W.; Giblin, D.E.; Gross, M.L., The Mechanism and Thermodynamics of Transesterification of Acetate-Ester Enolates in the Gas Phase, Int. J. Mass Spectrom. Ion Proc., 1998, 172, 1-2, 25, https://doi.org/10.1016/S0168-1176(97)83245-4 . [all data]

Notes

Go To: Top, Condensed phase thermochemistry data, Phase change data, Gas phase ion energetics data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  AE	Appearance energy
  Cp,liquid	Constant pressure heat capacity of liquid
  IE (evaluated)	Recommended ionization energy
  Pc	Critical pressure
  Tboil	Boiling point
  Tc	Critical temperature
  Tfus	Fusion (melting) point
  ΔcH°liquid	Enthalpy of combustion of liquid at standard conditions
  ΔfH°liquid	Enthalpy of formation of liquid at standard conditions
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions
  ΔvapH	Enthalpy of vaporization
  ΔvapH°	Enthalpy of vaporization at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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