Compound Information 

Name: 1,2,4-trimethylbenzene
Formula: C9H12
Molar Mass: 120.195
Additional Names: benzene, 1,2,4-trimethyl-
pseudocumene
Image of 1,2,4-trimethylbenzene

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Property Availability 

For this compound, WTT contains critically evaluated recommendations for:
(Please note that if more than 50 points are used for regression, only the 50 most-constraining points are reported)

  • Triple point temperature
    • Triple point temperature (Crystal 1, Liquid, and Gas)
      15 experimental data points
    • Triple point temperature (Metastable crystal, Liquid, and Gas)
      1 experimental data points
    • Triple point temperature (Crystal 2, Liquid, and Gas)
      3 experimental data points
  • Normal boiling temperature (Liquid and Gas)
    • Critical temperature (Liquid and Gas)
      5 experimental data points
      • Critical pressure (Liquid and Gas)
        3 experimental data points
        • Boiling temperature (Liquid in equilibrium with Gas) as a function of Pressure
          Pressure from 0.000285012 kPa to 3261.48 kPa
          • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
            Temperature from 224.16 K to 649.115 K
            47 experimental data points
            • Critical density (Liquid and Gas)
              • Density
                • Density (Liquid in equilibrium with Gas) as a function of Temperature
                  Temperature from 224.16 K to 649.115 K
                  45 experimental data points
                • Density (Liquid) as a function of Temperature and Pressure
                  Temperature from 293.996 K to 392.47 K
                  Pressure from 0.04 kPa to 40100 kPa
                  50 experimental data points
                • Density (Gas) as a function of Temperature and Pressure
                  Temperature from 320 K to 640 K
                  Pressure from 0.0005 kPa to 521.211 kPa
                • Density (Gas in equilibrium with Liquid) as a function of Temperature
                  Temperature from 520.942 K to 649.115 K
              • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                3 experimental data points
                • Enthalpy of vaporization or sublimation (Liquid to Gas) as a function of Temperature
                  Temperature from 224.16 K to 649.115 K
                  1 experimental data points
                  • Heat capacity at saturation pressure
                    • Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature
                      Temperature from 224.16 K to 636.133 K
                      45 experimental data points
                    • Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                      Temperature from 0.0002 K to 229.364 K
                      50 experimental data points
                  • Heat capacity at constant pressure (Ideal Gas) as a function of Temperature
                    Temperature from 50 K to 1500 K
                    • Enthalpy
                      • Enthalpy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                        Temperature from 0.0002 K to 229.364 K
                      • Enthalpy (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 224.16 K to 636.133 K
                      • Enthalpy (Ideal Gas) as a function of Temperature
                        Temperature from 50 K to 1500 K
                    • Entropy
                      • Entropy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                        Temperature from 0.0002 K to 229.364 K
                      • Entropy (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 224.16 K to 636.133 K
                        1 experimental data points
                      • Entropy (Ideal Gas) as a function of Temperature and Pressure
                        Temperature from 50 K to 1500 K
                    • Refractive index (Liquid) as a function of Wavelength, Temperature, and Pressure
                      Wavelength from 435.83 nm to 667.81 nm
                      Temperature from 293.096 K to 303.134 K
                      44 experimental data points
                      • Surface tension (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 252.017 K to 438.989 K
                        30 experimental data points
                        • Viscosity
                          • Viscosity (Gas) as a function of Temperature and Pressure
                            Temperature from 450 K to 970 K
                          • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 270 K to 640 K
                            2 experimental data points
                        • Thermal conductivity
                          • Thermal conductivity (Gas) as a function of Temperature and Pressure
                            Temperature from 450 K to 970 K
                          • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 257.578 K to 580 K
                            18 experimental data points
                        • Enthalpy of formation
                          • Enthalpy of formation (Gas)
                          • Enthalpy of formation (Liquid)
                            1 experimental data points

                        About WTT 

                        NIST/TRC Web Thermo Tables (WTT)
                        NIST Standard Reference Subscription Database 3 - Professional Edition
                        Version 2-2012-1-Pro

                        This web application provides access to a collection of critically evaluated thermodynamic property data for pure compounds with a primary focus on organics. These data were generated through dynamic data analysis, as implemented in the NIST ThermoData Engine software package [1, 2, 3, 4, 5, 6]. Some critically evaluated data from the historical TRC Thermodynamic Tables archive [7, 8] are included, also. As of May 2012, the Professional Edition contains information on 28432 compounds and total of 531486 evaluated data points. The properties covered by both versions (32 total) are described in Properties and Implemented Models.

                        Developed by Kenneth Kroenlein, Chris D. Muzny, Andrei F. Kazakov, Vladimir Diky, Robert D. Chirico, Joseph W. Magee, Ilmutdin Abdulagatov and Michael Frenkel.

                        Thermodynamics Research Center (TRC)
                        Thermophysical Properties Division
                        National Institute of Standards and Technology
                        Boulder CO 80305-3337

                        Questions and comments should be addressed to Dr. Michael Frenkel .

                        DISCLAIMER: The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high-quality copy of the database and to verify that the methods and data contained therein have been selected on the basis of sound scientific judgement. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the program and database.

                        Distributed by:
                        Standard Reference Data Program
                        National Institute of Standards and Technology
                        Gaithersburg MD 20899

                        Compound Information
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