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Pentanoic acid, 4-oxo-

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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:
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

Quantity Value Units Method Reference Comment
Tboil518.7KN/AAldrich Chemical Company Inc., 1990BS
Quantity Value Units Method Reference Comment
Tfus306.KN/ABuechner, 1906Uncertainty assigned by TRC = 2. K; TRC
Tfus310.KN/ABerthelot, 1897Uncertainty assigned by TRC = 1. K; TRC

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
74.4390.AStephenson and Malanowski, 1987Based on data from 375. - 519. K. See also Stull, 1947.; 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
375. - 519.06.632193152.908-43.564Stull, 1947Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Reference Comment
9.22306.2Acree, 1991AC

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction 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 by: John E. Bartmess

Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.

Individual Reactions

C5H7O3- + Hydrogen cation = Pentanoic acid, 4-oxo-

By formula: C5H7O3- + H+ = C5H8O3

Quantity Value Units Method Reference Comment
Deltar1425. ± 12.kJ/molG+TSGraul, Schnute, et al., 1990gas phase
Quantity Value Units Method Reference Comment
Deltar1396. ± 12.kJ/molCIDCGraul, Schnute, et al., 1990gas phase

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 compiled by: John E. Bartmess

De-protonation reactions

C5H7O3- + Hydrogen cation = Pentanoic acid, 4-oxo-

By formula: C5H7O3- + H+ = C5H8O3

Quantity Value Units Method Reference Comment
Deltar1425. ± 12.kJ/molG+TSGraul, Schnute, et al., 1990gas phase
Quantity Value Units Method Reference Comment
Deltar1396. ± 12.kJ/molCIDCGraul, Schnute, et al., 1990gas phase

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

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


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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Mass spectrum
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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
NIST MS number 1979

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Gas Chromatography

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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

Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryHP-5MS1063.2Andriamaharavo, 201430. m/0.25 mm/0.25 «mu»m, He; Program: 60C (1 min) => 5 C/min => 210C => 10 C/min => 280C (15 min)

Normal alkane RI, polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryRTX-Wax2317.Prososki, Etzel, et al., 200730. m/0.25 mm/0.5 «mu»m, He, 40. C @ 5. min, 10. K/min, 220. C @ 10. min
CapillaryDB-Wax2312.Wei, Mura, et al., 200160. m/0.25 mm/0.25 «mu»m, He, 2. K/min; Tstart: 40. C; Tend: 200. C
CapillaryCarbowax 20M2340.Buttery, Ling, et al., 198350. C @ 30. min, 1. K/min, 170. C @ 60. min; Column length: 150. m; Column diameter: 0.64 mm

References

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

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

Aldrich Chemical Company Inc., 1990
Aldrich Chemical Company Inc., Catalog Handbook of Fine Chemicals, Aldrich Chemical Company, Inc., Milwaukee WI, 1990, 1. [all data]

Buechner, 1906
Buechner, E.H., Z. Phys. Chem., Stoechiom. Verwandtschaftsl., 1906, 54, 665. [all data]

Berthelot, 1897
Berthelot, M., Thermochimie, Gauthier-Villars, Paris, 1897. [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]

Acree, 1991
Acree, William E., Thermodynamic properties of organic compounds: enthalpy of fusion and melting point temperature compilation, Thermochimica Acta, 1991, 189, 1, 37-56, https://doi.org/10.1016/0040-6031(91)87098-H . [all data]

Graul, Schnute, et al., 1990
Graul, S.T.; Schnute, M.E.; Squires, R.R., Gas-Phase Acidities of Carboxylic Acids and Alcohols from Collision-Induced Dissociation of Dimer Cluster Ions, Int. J. Mass Spectrom. Ion Proc., 1990, 96, 2, 181, https://doi.org/10.1016/0168-1176(90)87028-F . [all data]

Andriamaharavo, 2014
Andriamaharavo, N.R., Retention Data. NIST Mass Spectrometry Data Center., NIST Mass Spectrometry Data Center, 2014. [all data]

Prososki, Etzel, et al., 2007
Prososki, R.A.; Etzel, M.R.; Rankin, S.A., Solvent type affects the number, distribution, and relative quantities of volatile compounds found in sweet whey powder, J. Dairy Sci., 2007, 90, 2, 523-531, https://doi.org/10.3168/jds.S0022-0302(07)71535-7 . [all data]

Wei, Mura, et al., 2001
Wei, A.; Mura, K.; Shibamoto, T., Antioxidative activity of volatile chemicals extracted from beer, J. Agric. Food Chem., 2001, 49, 8, 4097-4101, https://doi.org/10.1021/jf010325e . [all data]

Buttery, Ling, et al., 1983
Buttery, R.G.; Ling, L.C.; Teranishi, R.; Mon, T.R., Insect attractants: volatiles of hydrolizyed protein insect baits, J. Agric. Food Chem., 1983, 31, 4, 689-692, https://doi.org/10.1021/jf00118a003 . [all data]


Notes

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