Benzoic acid, 2,3-dihydroxy-

• Formula: C₇H₆O₄
• Molecular weight: 154.1201
• IUPAC Standard InChI: InChI=1S/C7H6O4/c8-5-3-1-2-4(6(5)9)7(10)11/h1-3,8-9H,(H,10,11) Copy

  
• IUPAC Standard InChIKey: GLDQAMYCGOIJDV-UHFFFAOYSA-N Copy
• CAS Registry Number: 303-38-8
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: o-Pyrocatechuic acid; Catechol-3-carboxylic acid; Pyrocatechuic acid; 2,3-Dihydroxybenzoic acid; 3-Hydroxysalicylic acid; DOBK; 2,3 DHB
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• Information on this page:
  • Phase change data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • Gas Chromatography
  • References
  • Notes
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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: William E. Acree, Jr., James S. Chickos

Enthalpy of sublimation

Enthalpy of fusion

IR Spectrum

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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

Gas Phase Spectrum

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Additional Data

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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Additional Data

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

Normal alkane RI, non-polar column, isothermal

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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.

Monte, Gonc«807»alves, et al., 2010
Monte, Manuel J.S.; Gonc«807»alves, Mariana V.; Ribeiro da Silva, Maria D.M.C., Vapor Pressures and Enthalpies of Combustion of the Dihydroxybenzoic Acid Isomers, J. Chem. Eng. Data, 2010, 55, 6, 2246-2251, https://doi.org/10.1021/je900777q . [all data]

Hedin, Minyard, et al., 1967
Hedin, P.A.; Minyard, J.P.; Thompson, A.C., Chromatographic and spectral analysis of phenolic acids and related compounds, J. Chromatogr., 1967, 30, 43-53, https://doi.org/10.1016/S0021-9673(00)84111-4 . [all data]

Notes

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• Symbols used in this document:
  

  ΔfusH	Enthalpy of fusion
  ΔsubH	Enthalpy of sublimation
  ΔsubH°	Enthalpy of sublimation at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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