Benzoic acid, 3,4-dihydroxy-

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

  
• IUPAC Standard InChIKey: YQUVCSBJEUQKSH-UHFFFAOYSA-N Copy
• CAS Registry Number: 99-50-3
• Chemical structure:
  This structure is also available as a 2d Mol file
• Other names: Protocatechuic acid; 3,4-Dihydroxybenzoic acid; 4-Carboxy-1,2-dihydroxybenzene
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• Information on this page:
  • Phase change data
  • References
  • Notes
• Other data available:
  • Gas Chromatography
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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

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]

Queimada, Mota, et al., 2009
Queimada, Antonio J.; Mota, Fatima L.; Pinho, Simao P.; Macedo, Eugenia A., Solubilities of Biologically Active Phenolic Compounds: Measurements and Modeling, J. Phys. Chem. B, 2009, 113, 11, 3469-3476, https://doi.org/10.1021/jp808683y . [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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