2-Butenedioic acid, 2-methyl-, (Z)-

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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 by: Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director

Quantity Value Units Method Reference Comment
Tfus356.4KN/AWilhoit and Lei, 1965Uncertainty assigned by TRC = 0.6 K
Tfus356.15KN/AWilhoit and Lei, 1965Uncertainty assigned by TRC = 0.7 K

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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: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

2-Butenedioic acid, 2-methyl-, (Z)- + Bromine = 2-Butenedioic acid, 2-methyl-, (E)- + Bromine

By formula: C5H6O4 + Br2 = C5H6O4 + Br2

Quantity Value Units Method Reference Comment
Δr-1.2 ± 0.2kcal/molEqkJwo, Huang, et al., 1987solid phase; HPLC

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.
Origin Japan AIST/NIMC Database- Spectrum MS-NW-1804
NIST MS number 230419

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References

Go To: Top, Phase change data, Reaction thermochemistry 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.

Wilhoit and Lei, 1965
Wilhoit, R.C.; Lei, I., Thermochemistry of Biologically Important Compounds. Heats of Combustion of Five Organic Acids, J. Chem. Eng. Data, 1965, 10, 166. [all data]

Jwo, Huang, et al., 1987
Jwo, J-J.; Huang, C-Y.; Chang, E-F.; Wu, R.R., Kinetic study of the bromine-catalyzed isomerization of methyl- and chloro-maleic acids in aqueous Ce(IV)-Br- -H2SO4 medium, J. Chin. Chem. Soc. (Taipei), 1987, 34, 247-256. [all data]


Notes

Go To: Top, Phase change data, Reaction thermochemistry data, Mass spectrum (electron ionization), References