The Journal of Chemical & Engineering Data is a monthly journal devoted to the publication of data obtained from both experiment and computation, which are viewed as complementary. It is the only American Chemical Society journal primarily concerned with articles containing data on the phase behavior and the physical, thermodynamic, and transport properties of well-defined materials, including complex mixtures of known compositions. The Journal of Chemical & Engineering Data encourages manuscripts that report on consequential (relevant, comprehensive, and robust) data and place these data into context by addressing what can be learned from differences and similarities to prior published data on related systems.