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Thermodynamic Properties of Diphenylmethane



Robert D. Chirico, William Steele


Measurements leading to the calculation of the standard thermodynamic properties for gaseous diphenylmethane (Chemical Abstracts registry number [101-81-5]) are reported. Experimental methods include adiabatic heat-capacity calorimetry, vibrating-tube densitometry, comparative ebulliometry, inclined-piston gauge manometry, and differential-scanning calorimetry (d.s.c.). This research group published measurement results for the enthalpy of combustion previously. The critical temperature was measured with a differential scanning calorimeter. The critical pressure and critical density were estimated. Standard molar entropies, standard molar enthalpies, and standard molar Gibbs free energies of formation were derived at selected temperatures between 298.15 K and 700 K. All results are compared with experimental values reported previously in the literature.
Journal of Chemical and Engineering Data


critical properties, density, heat capacity, ideal-gas properties, thermodynamic functions, vapor pressure


Chirico, R. and Steele, W. (2005), Thermodynamic Properties of Diphenylmethane, Journal of Chemical and Engineering Data, [online], (Accessed April 19, 2024)
Created March 30, 2005, Updated January 27, 2020