Triethyl­ammonium 3,4-dihy­droxy­benzoate

In the title compound, C(6)H(16)N(+)·C(7)H(5)O(4) (−), the hy­droxy groups of the 3,4-dihy­droxy­benzoate anion form O—H⋯O hydrogen bonds to the carboxyl­ate groups of two adjacent anions, generating layers propagating in the ac plane. The triethyl­ammonium cations lie between these layers, forming N—H⋯O hydrogen bonds to the carboxyl­ate groups of the anions. The structure is consolidated by weak inter­molecular C—H⋯O inter­actions.