With numerical data on approx. 200 thermodynamic and physical properties, which are combinable with 25 conditions and 22 equilibrium types, Infotherm® numerically covers nearly all thermodynamically and physically relevant questions relating to the registered compounds.Mixtures can be defined and systematically searched for in the expert search mode. This is the main emphasis of the database. As a rule, chemical engineering as well as process technology deal with mixtures, whose properties can only be calculated using complex numerical methods, whereby significant deviations from experimental results may still occur. Infotherm® is an invaluable and unique tool for every chemical engineer or process engineer for chemical plant construction, as it offers safety by comparing calculated or estimated values with experimental results. The hit list of the retrieved data sets is ordered, among other criteria, by the reliability of the measuring method about which the user is also informed. Furthermore, the bibliographical data of the original publication is given. Beside the online-version Infotherm® is available as a multi-user capable inhouse version on DVD.