3,4-Dihydroxybenzoate(aq)
Formation Gibbs Energy
Estimated ΔfG'm -438.4 ± 7.3 [kJ/mol]    Enter custom concentration »
Estimated ΔfG'° -421.3 ± 7.3 [kJ/mol]
Estimated using Component Contribution (2013)
pH
Ionic strength [M]
General Properties
Formula C7H6O4
Common names 3,4-Dihydroxybenzoate; 3,4-Dihydroxybenzoic acid; Protocatechuate; Protocatechuic acid; C00230
Molar Mass 154.03 [Da]
Structure
Links KEGG »
Species Formation Energies
Phase Net charge #Hydrogens Δf [kJ/mol] ΔfG'° [kJ/mol] Reference
aqueous -3 3 -496.5 -380.3 Component Contribution (2013)
aqueous -2 4 -569.7 -410.0
aqueous -1 5 -623.4 -421.2
aqueous 0 6 -647.1 -403.8