Compound Information 

Name: hydrazine
Formula: H4N2
Molar Mass: 32.046
Image of hydrazine

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Property Availability 

For this compound, WTT contains critically evaluated recommendations for:

  • Triple point temperature (Crystal 1, Liquid, and Gas)
    3 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 0.401994 kPa to 19297.8 kPa
            • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
              Temperature from 274.69 K to 627 K
              41 experimental data points
              • Critical density (Liquid and Gas)
                • Density
                  • Density (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 274.69 K to 627 K
                    38 experimental data points
                  • Density (Gas) as a function of Temperature and Pressure
                    Temperature from 310 K to 360 K
                    Pressure from 4e-05 kPa to 38.9149 kPa
                    6 experimental data points
                • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                  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 274.69 K to 362.973 K
                      15 experimental data points
                    • Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                      Temperature from 0.0003 K to 274.689 K
                      43 experimental data points
                  • Heat capacity at constant pressure (Ideal Gas) as a function of Temperature
                    Temperature from 50 K to 1500 K
                    14 experimental data points
                    • Enthalpy
                      • Enthalpy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                        Temperature from 0.0003 K to 274.689 K
                      • Enthalpy (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 274.69 K to 362.973 K
                      • Enthalpy (Ideal Gas) as a function of Temperature
                        Temperature from 50 K to 1500 K
                    • Entropy
                      • Entropy (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 274.69 K to 362.973 K
                        1 experimental data points
                      • Entropy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                        Temperature from 0.0003 K to 274.689 K
                      • 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 434.05 nm to 670.779 nm
                      Temperature from 295.438 K to 298.136 K
                      17 experimental data points
                      • Surface tension (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 275.4 K to 353.179 K
                        18 experimental data points
                        • Viscosity
                          • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 278.15 K to 620 K
                            17 experimental data points
                          • Viscosity (Gas) as a function of Temperature and Pressure
                            Temperature from 390 K to 940 K
                        • Thermal conductivity
                          • Thermal conductivity (Gas) as a function of Temperature and Pressure
                            Temperature from 390 K to 940 K
                          • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 280 K to 560 K
                        • 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

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