We have summarized experimental data on the limited solubility of mercury in gold and on the composition of intermetallic phases in the Au-Hg binary system. Standard thermodynamic functions of Au1-xHgx (0 <= x(Hg) <= 0.2) solid solution have been calculated. The obtained data can be used in different software packages for developing physicochemical models in natural and technological processes with participation of gold and mercury. (C) 2013 Elsevier B.V. All rights reserved.