Vapor pressure, liquid heat capacities, and phase change enthalpies and temperatures for technologically important organometallic precursor tetrakis(tert-butoxy)hafnium are reported. The vapor pressure was measured using the static method in the temperature range from 280 to 308K. The standard vaporization enthalpy was derived from the temperature dependence of vapor pressure data. The liquid heat capacities were determined by Calvet calorimetry in the temperature range from 294 to 350K. The enthalpy and temperature of fusion were measured by differential scanning calorimetry. The present study significantly extends and updates the information on physico-chemical properties for this material. (C) 2011 Elsevier B.V. All rights reserved.