This book contains selected values of the thermochemical properties of well over 3000 mostly inorganic substances. Values are given for enthalpy of formation and entropy at 298 K. Using the compiled fixed Cp values or the Cp/T functions in the form of a polynomial, the enthalpy, entropy, and Gibbs free energy values at other temperatures can be calculated. In many cases special equilibrium constants, e. g., for evaporation or decomposition reactions, are also given. With almost 500 new compounds added to the second edition, the book contains a very comprehensive collection of thermochemical data.It is relevant and useful to researchers as well as practitioners in physics, chemistry, metallurgy, ceramic science, and other fields of natural science and engineering.