Low-temperature heat capacity C-p.m of 2,6-dicarboxypyridine (C7H5NO4; CAS 499-83-2) was precisely measured in the temperature range from (80 to 378) K with a high precision automated adiabatic calorimeter. No phase transition or thermal anomaly was observed in this range. The thermodynamic functions [H-T - H-298.15] and [S-T - S-298.15] were calculated in the range from (80 to 378) K. The standard molar enthalpy of combustion and the standard molar enthalpy of formation of the compound have been determined, Delta H-c(m)o (C7H5NO4, cr) = -(2741.41 +/- 0.49) kJ (.) mol(-1) and Delta H-f(m)o(C7H5NO4, cr) = -(727.74 +/-1.50) kJ (.) mol(-1), by means of a precision oxygen-bomb combustion calorimeter at T = 298.15 K. The thermodynamic properties of the compound were further investigated through differential scanning calorimeter (DSC) and the thermogravimetric (TG) analysis. (c) 2006 Published by Elsevier Ltd.