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Maleic acid

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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:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny, director
AC - William E. Acree, Jr., James S. Chickos
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Tfus402.9KN/AWilhoit and Shiao, 1964Uncertainty assigned by TRC = 0.6 K; TRC
Tfus403.8KN/AWilhoit and Shiao, 1964Uncertainty assigned by TRC = 0.5 K; TRC
Tfus416.65KN/ASkinner and Snelson, 1959Uncertainty assigned by TRC = 0.5 K; TRC
Tfus405.KN/AKern, Shriner, et al., 1925Uncertainty assigned by TRC = 2. K; TRC
Tfus403.4KN/AWeiss and Downs, 1923Uncertainty assigned by TRC = 0.6 K; TRC
Quantity Value Units Method Reference Comment
Tc616.0KN/AAnselme and Teja, 1990Uncertainty assigned by TRC = 50. K; Tc > 616 K, which was observed with decomposition; TRC

Enthalpy of sublimation

DeltasubH (kJ/mol) Temperature (K) Method Reference Comment
105.4 ± 1.7368.MEArshadi, 1974Based on data from 348. - 389. K.; AC
110. ± 2.5357. - 367.N/AWolf and Weghofer, 1938See also Jones, 1960 and Cox and Pilcher, 1970.; AC
110. ± 3.363.VWolf and Weghofer, 1938, 2ALS
109. ± 4.2356. - 371.N/AWolf and Trieschmann, 1934AC

Enthalpy of fusion

DeltafusH (kJ/mol) Temperature (K) Method Reference Comment
26.9411.9DSCGuo, Sadiq, et al., 2010AC

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:


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.

Wilhoit and Shiao, 1964
Wilhoit, R.C.; Shiao, D., Thermochemistry of Biologically Important Compounds. Heats of Combustion of Solid Organic Acids, J. Chem. Eng. Data, 1964, 9, 595. [all data]

Skinner and Snelson, 1959
Skinner, H.A.; Snelson, A., Heats of Hydrogenation. Part 3, Trans. Faraday Soc., 1959, 55, 404. [all data]

Kern, Shriner, et al., 1925
Kern, J.W.; Shriner, R.L.; Adams, R., Platinum and Palladium Oxides as Catalysts in the Reduction of Organic Compounds IX. The Reduction of Olefins, J. Am. Chem. Soc., 1925, 47, 1147. [all data]

Weiss and Downs, 1923
Weiss, J.M.; Downs, C.R., The Physical Properties of Maleic, Fumaric and Malic Acids, J. Am. Chem. Soc., 1923, 45, 1003. [all data]

Anselme and Teja, 1990
Anselme, M.J.; Teja, A.S., The critical properties of rapidly reacting substances, AIChE Symp. Ser., 1990, 86, 279, 128-32. [all data]

Arshadi, 1974
Arshadi, Mohammed R., Determination of heats of sublimation of organic compounds by a mass spectrometric--knudsen effusion method, J. Chem. Soc., Faraday Trans. 1, 1974, 70, 0, 1569, https://doi.org/10.1039/f19747001569 . [all data]

Wolf and Weghofer, 1938
Wolf, K.L.; Weghofer, H.Z., Z. Phys. Chem. Abt. B, 1938, 39, 194. [all data]

Jones, 1960
Jones, A.H., Sublimation Pressure Data for Organic Compounds., J. Chem. Eng. Data, 1960, 5, 2, 196-200, https://doi.org/10.1021/je60006a019 . [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]

Wolf and Weghofer, 1938, 2
Wolf, K.L.; Weghofer, H., Uber sublimationswarmen, Z. Phys. Chem., 1938, 39, 194-208. [all data]

Wolf and Trieschmann, 1934
Wolf, K.L.; Trieschmann, H.G., Z. Phys. Chem. Abt. B, 1934, 27, 376. [all data]

Guo, Sadiq, et al., 2010
Guo, Kun; Sadiq, Ghazala; Seaton, Colin; Davey, Roger; Yin, Qiuxiang, Co-Crystallization in the Caffeine/Maleic Acid System: Lessons from Phase Equilibria, Crystal Growth & Design, 2010, 10, 1, 268-273, https://doi.org/10.1021/cg900885n . [all data]


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