Compound Information 

Name: diphenylamine
Formula: C12H11N
Molar Mass: 169.227
Additional Names: N-phenylaniline
N-phenylbenzenamine
benzenamine, N-phenyl-
Image of diphenylamine

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Property Availability 

For this compound, WTT contains critically evaluated recommendations for:

  • Triple point temperature (Crystal 1, Liquid, and Gas)
    38 experimental data points
    • Normal boiling temperature (Liquid and Gas)
      • Critical temperature (Liquid and Gas)
        • Critical pressure (Liquid and Gas)
          • Boiling temperature (Liquid in equilibrium with Gas) as a function of Pressure
            Pressure from 0.00203215 kPa to 3759.98 kPa
            • Phase boundary pressure
              • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
                Temperature from 326.32 K to 818 K
                44 experimental data points
              • Phase boundary pressure (Metastable crystal in equilibrium with Gas) as a function of Temperature
                Temperature from 302.7 K to 319.2 K
                14 experimental data points
              • Phase boundary pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                Temperature from 293.1 K to 326.32 K
                41 experimental data points
            • Critical density (Liquid and Gas)
              • Density
                • Density (Liquid in equilibrium with Gas) as a function of Temperature
                  Temperature from 326.32 K to 818 K
                  42 experimental data points
                • Density (Gas) as a function of Temperature and Pressure
                  Temperature from 400 K to 810 K
                  Pressure from 0.0005 kPa to 500 kPa
                • Density (Gas in equilibrium with Liquid) as a function of Temperature
                  Temperature from 658.218 K to 818 K
              • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                8 experimental data points
                • Enthalpy of vaporization or sublimation
                  • Enthalpy of vaporization or sublimation (Liquid to Gas) as a function of Temperature
                    Temperature from 326.32 K to 818 K
                  • Enthalpy of vaporization or sublimation (Crystal 1 to Gas) as a function of Temperature
                    Temperature from 293.1 K to 326.32 K
                • Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                  Temperature from 293.138 K to 325.126 K
                  5 experimental data points
                  • Heat capacity at constant pressure (Ideal Gas) as a function of Temperature
                    Temperature from 200 K to 1000 K
                    • Enthalpy (Ideal Gas) as a function of Temperature
                      Temperature from 200 K to 1000 K
                      • Refractive index (Liquid) as a function of Wavelength, Temperature, and Pressure
                        Wavelength from 434.05 nm to 656.279 nm
                        Temperature from 337.124 K to 373.023 K
                        15 experimental data points
                        • Surface tension (Liquid in equilibrium with Gas) as a function of Temperature
                          Temperature from 332.975 K to 427.985 K
                          12 experimental data points
                          • Viscosity (Gas) as a function of Temperature and Pressure
                            Temperature from 580 K to 1220 K
                            • Thermal conductivity
                              • Thermal conductivity (Gas) as a function of Temperature and Pressure
                                Temperature from 580 K to 1220 K
                              • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                                Temperature from 330 K to 730 K
                            • Enthalpy of formation
                              • Enthalpy of formation (Gas)
                              • Enthalpy of formation (Crystal)
                                3 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

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