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Malic Acid


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, Kenneth Kroenlein director
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Tfus400.75KN/AWilhoit and Shiao, 1964Uncertainty assigned by TRC = 0.6 K; TRC

Enthalpy of phase transition

DeltaHtrs (kJ/mol) Temperature (K) Initial Phase Final Phase Reference Comment
33.522402.crystaline, IliquidCeolin, Szwarc, et al., 1990Stable form I.; DH
30.170396.crystaline, IIliquidCeolin, Szwarc, et al., 1990Stable form II.; DH

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

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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]

Ceolin, Szwarc, et al., 1990
Ceolin, R.; Szwarc, H.; Lepage, F., On the dimorphism of DL-malic acid, Thermochim. Acta, 1990, 158(2), 347-352. [all data]


Notes

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