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

Published

January 14, 2010

Author(s)

Jason A. Widegren, Thomas J. Bruno

Abstract

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.

Citation

Journal of Chemical and Engineering Data

Volume

55

Pub Type

Journals

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Keywords

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

Citation

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], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=901430 (Accessed October 10, 2025)