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Gas Saturation Vapor Pressure Measurements of Mononitrotoluene Isomers from 283.15 to 313.15 K



Jason A. Widegren, Thomas J. Bruno


A gas saturation apparatus capable of simultaneous measurements on eighteen samples was used for this work. The vapor pressures of 2-nitrotoluene (2-NT), 3-nitrotoluene (3-NT), 4-nitrotoluene (4-NT) and n-tetradecane (a control compound) were measured with this apparatus over the temperature range 283.15 K to 313.15 K. Over this temperature range, the vapor pressure of 2-NT ranged from 5.53 Pa to 61.1 Pa, the vapor pressure of 3-NT ranged from 3.39 Pa to 37.8 Pa, and the vapor pressure of 4-NT ranged from 1.25 Pa to 26.4 Pa. The expanded (k = 2) uncertainty in vapor pressures is estimated to be 28%. The enthalpies of vaporization or sublimation were determined using the Clausius-Clapeyron equation.
Journal of Chemical and Engineering Data


vapor pressure, enthalpy of vaporization, heat of vaporization, enthalpy of sublimation, heat of sublimation, concatenated gas saturation technique, entrainment, transpiration, transport, gas current method, n-tetradecane, nitrotoluene, mononitrotoluene, 2-nitrotoluene, 3-nitrotoluene, 4-nitrotoluene, 2-methylnitrobenzene, 3-methylnitrobenzene, 4-methylnitrobenzene


Widegren, J. and Bruno, T. (2010), Gas Saturation Vapor Pressure Measurements of Mononitrotoluene Isomers from 283.15 to 313.15 K, Journal of Chemical and Engineering Data, [online], (Accessed July 25, 2024)


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Created January 13, 2010, Updated October 12, 2021