Compound Information 

Name: 1,2-propanediol
Formula: C3H8O2
Molar Mass: 76.095
Additional Names: propylene glycol
2-hydroxypropanol
1,2-propylene glycol
1,2-dihydroxypropane
dl-propylene glycol
DL-1,2-propanediol
1,2-propanediol, (RS)-
1,2-propanediol, (.+-.)-
(RS)-1,2-propanediol
(.+-.)-1,2-propanediol
Image of 1,2-propanediol

Please be patient while the web interface loads...

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 (Crystal 1, Liquid, and Gas)
    1 experimental data points
    • Normal boiling temperature (Liquid and Gas)
      • Critical temperature (Liquid and Gas)
        1 experimental data points
        • Critical pressure (Liquid and Gas)
          1 experimental data points
          • Boiling temperature (Liquid in equilibrium with Gas) as a function of Pressure
            Pressure from 2.80241e-005 kPa to 5945.71 kPa
            • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
              Temperature from 242.8 K to 676.4 K
              50 experimental data points
              • Critical density (Liquid and Gas)
                • Density
                  • Density (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 263 K to 676.4 K
                    43 experimental data points
                  • Density (Liquid) as a function of Temperature and Pressure
                    Temperature from 288.06 K to 313.15 K
                    Pressure from 0.3 kPa to 349000 kPa
                    50 experimental data points
                  • Density (Gas in equilibrium with Liquid) as a function of Temperature
                    Temperature from 542.797 K to 676.4 K
                • Enthalpy of vaporization or sublimation (Liquid to Gas) as a function of Temperature
                  Temperature from 242.8 K to 676.4 K
                  3 experimental data points
                  • Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 300 K to 600 K
                    45 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
                        • Entropy
                          • Entropy (Ideal Gas) as a function of Temperature and Pressure
                            Temperature from 200 K to 1000 K
                          • Entropy (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 300 K to 600 K
                        • Speed of sound (Liquid) as a function of Temperature and Pressure
                          Temperature from 288.06 K to 313.15 K
                          Pressure from 0.1 kPa to 101320 kPa
                          50 experimental data points
                          • Refractive index (Liquid) as a function of Wavelength, Temperature, and Pressure
                            Wavelength from 447.171 nm to 667.82 nm
                            Temperature from 288.141 K to 313.13 K
                            39 experimental data points
                            • Surface tension (Liquid in equilibrium with Gas) as a function of Temperature
                              Temperature from 288.141 K to 303.193 K
                              7 experimental data points
                              • Viscosity
                                • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                                  Temperature from 273.001 K to 670 K
                                  50 experimental data points
                                • Viscosity (Gas) as a function of Temperature and Pressure
                                  Temperature from 470 K to 1010 K
                              • Thermal conductivity
                                • Thermal conductivity (Gas) as a function of Temperature and Pressure
                                  Temperature from 470 K to 1010 K
                                • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                                  Temperature from 250 K to 600 K
                                  36 experimental data points
                              • Enthalpy of formation
                                • Enthalpy of formation (Gas)
                                • Enthalpy of formation (Liquid)
                                  2 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