Compound Information 

Name: benzoic acid, 2,5-dihydroxy-
Formula: C7H6O4
Molar Mass: 154.121
Additional Names: 2,5-dihydroxybenzoic acid
Image of benzoic acid, 2,5-dihydroxy-

Please be patient while the web interface loads...

Property Availability 

For this compound, WTT contains critically evaluated recommendations for:

  • Triple point temperature (Crystal 1, Liquid, and Gas)
    2 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 0.709036 kPa to 12227.3 kPa
            • Phase boundary pressure
              • Phase boundary pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                Temperature from 361.8 K to 476.8 K
                49 experimental data points
              • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
                Temperature from 476.8 K to 871 K
            • Critical density (Liquid and Gas)
              • Density (Liquid in equilibrium with Gas) as a function of Temperature
                Temperature from 476.8 K to 871 K
                • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                  1 experimental data points
                  • Enthalpy of vaporization or sublimation (Crystal 1 to Gas) as a function of Temperature
                    Temperature from 361.8 K to 476.8 K
                    1 experimental data points
                    • Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature
                      Temperature from 476.8 K to 853.58 K
                      • 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
                          • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 480 K to 870 K
                            • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                              Temperature from 480 K to 780 K
                              • Enthalpy of formation (Crystal)
                                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
                                Property Availability
                                About this site
                                NIST Chemistry WebBook