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Methyl isobutyrate

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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, Kenneth Kroenlein director
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
AC - William E. Acree, Jr., James S. Chickos

Quantity Value Units Method Reference Comment
Tboil365. ± 1.KAVGN/AAverage of 14 out of 17 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus187.15KN/ADolliver, Gresham, et al., 1938Uncertainty assigned by TRC = 1.5 K; TRC
Tfus188.50KN/ATimmermans, 1922Uncertainty assigned by TRC = 0.25 K; TRC
Quantity Value Units Method Reference Comment
Tc540.70KN/AYoung, 1910Uncertainty assigned by TRC = 1. K; TRC
Tc540.70KN/AYoung and Thomas, 1893Uncertainty assigned by TRC = 1. K; TRC
Tc546.8KN/APawlewski, 1882Uncertainty assigned by TRC = 6. K; TRC
Quantity Value Units Method Reference Comment
Pc34.32barN/AYoung, 1910Uncertainty assigned by TRC = 0.8106 bar; TRC
Pc34.304barN/AYoung and Thomas, 1893Uncertainty assigned by TRC = 0.40 bar; TRC
Quantity Value Units Method Reference Comment
rhoc2.949mol/lN/AYoung, 1910Uncertainty assigned by TRC = 0.098 mol/l; TRC
rhoc2.954mol/lN/AYoung and Thomas, 1893Uncertainty assigned by TRC = 0.04 mol/l; TRC
Quantity Value Units Method Reference Comment
Deltavap37.42kJ/molN/AMajer and Svoboda, 1985 
Deltavap33.4 ± 0.02kJ/molVMathews, 1926ALS

Enthalpy of vaporization

DeltavapH (kJ/mol) Temperature (K) Method Reference Comment
32.61365.6N/AMajer and Svoboda, 1985 
33.7381.AStephenson and Malanowski, 1987Based on data from 366. - 533. K.; AC
40.1254.AStephenson and Malanowski, 1987Based on data from 239. - 366. 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
239.1 - 365.84.583541499.414-38.113Stull, 1947Coefficents calculated by NIST from author's data.
365.8 - 532.74.465381506.866-27.723Stull, 1947Coefficents calculated by NIST from author's data.

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:


References

Go To: Top, Phase change data, Notes

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

Dolliver, Gresham, et al., 1938
Dolliver, M.A.; Gresham, T.L.; Kistiakowsky, G.B.; Smith, E.A.; Vaughan, W.E., Heats of Organic Reactions VI. Heats of Hydrogenation of Some Oxygen- Containing Compounds, J. Am. Chem. Soc., 1938, 60, 440. [all data]

Timmermans, 1922
Timmermans, J., Investigation of the Freezing Point of Organic Substances VII, Bull. Soc. Chim. Belg., 1922, 31, 389. [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 and Thomas, 1893
Young, S.; Thomas, G.L., The vapour pressures, molecular volumes, and critical constants of ten of the lower esters, J. Chem. Soc., 1893, 63, 1191. [all data]

Pawlewski, 1882
Pawlewski, B., The critical temperatures of ester compounds, Ber. Dtsch. Chem. Ges., 1882, 15, 2460-4. [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]

Mathews, 1926
Mathews, J.H., The accurate measurement of heats of vaporization of liquids, J. Am. Chem. Soc., 1926, 48, 562-576. [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]


Notes

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