In the present work the temperature dependences of trisodium dilead tris(sulfate(VI)) chloride heat capacity have been measured for the first time in the range from 6 to 336 K. The experimental data were used to calculate standard thermodynamic functions, namely the heat capacity C-p degrees(T), enthalpy H degrees(T)-H degrees (0), entropy S degrees(T)-S degrees(0) and Gibbs function G degrees(T)-H degrees(0), for the range from T -> 0-336 K. The differential thermal analysis was applied to measure temperature of incongruent melting of compound under study. The high-temperature X-ray diffraction was used for the determining thermal expansion coefficients. (C) 2014 Elsevier B.V. All rights reserved.