Compound Information 

Name: dimethyl sulfoxide
Formula: C2H6OS
Molar Mass: 78.129
Additional Names: methylsulfinylmethane
DMSO
dimethyl sulphoxide
sulfinylbismethane
methyl sulfoxide
methane, sulfinylbis-
Image of dimethyl sulfoxide

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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 (Crystal 1, Liquid, and Gas)
    12 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 0.049778 kPa to 5847.39 kPa
            • Phase boundary pressure
              • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
                Temperature from 291.666 K to 706.9 K
                50 experimental data points
              • Phase boundary pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                Temperature from 273.65 K to 291.665 K
                23 experimental data points
            • Critical density (Liquid and Gas)
              1 experimental data points
              • Density
                • Density (Liquid in equilibrium with Gas) as a function of Temperature
                  Temperature from 291.666 K to 706.9 K
                  49 experimental data points
                • Density (Liquid) as a function of Temperature and Pressure
                  Temperature from 298.15 K to 323.15 K
                  Pressure from 0.1 kPa to 100000 kPa
                  13 experimental data points
                • Density (Gas) as a function of Temperature and Pressure
                  Temperature from 350 K to 691 K
                  Pressure from 0.0009 kPa to 938.161 kPa
                • Density (Gas in equilibrium with Liquid) as a function of Temperature
                  Temperature from 569.262 K to 706.942 K
                  1 experimental data points
              • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                1 experimental data points
                • Enthalpy of vaporization or sublimation
                  • Enthalpy of vaporization or sublimation (Liquid to Gas) as a function of Temperature
                    Temperature from 291.666 K to 706.9 K
                    1 experimental data points
                  • Enthalpy of vaporization or sublimation (Crystal 1 to Gas) as a function of Temperature
                    Temperature from 273.65 K to 291.665 K
                • Heat capacity at saturation pressure
                  • Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 291.666 K to 423.15 K
                    50 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 291.665 K
                    50 experimental data points
                • Enthalpy
                  • Enthalpy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                    Temperature from 0.0003 K to 291.665 K
                    35 experimental data points
                  • Enthalpy (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 291.666 K to 423.15 K
                    4 experimental data points
                • Entropy
                  • Entropy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                    Temperature from 0.0003 K to 291.665 K
                    35 experimental data points
                  • Entropy (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 291.666 K to 423.15 K
                    4 experimental data points
                • Speed of sound (Liquid) as a function of Temperature and Pressure
                  Temperature from 298.15 K to 323.15 K
                  Pressure from 5e-07 kPa to 0.532464 kPa
                  50 experimental data points
                  • Refractive index (Liquid) as a function of Wavelength, Temperature, and Pressure
                    Wavelength from 435.8 nm to 589.3 nm
                    Temperature from 292.996 K to 328.15 K
                    50 experimental data points
                    • Surface tension (Liquid in equilibrium with Gas) as a function of Temperature
                      Temperature from 292.996 K to 480.06 K
                      39 experimental data points
                      • Viscosity
                        • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                          Temperature from 293.15 K to 478.56 K
                          50 experimental data points
                        • Viscosity (Gas) as a function of Temperature and Pressure
                          Temperature from 470 K to 1060 K
                      • Enthalpy of formation
                        • Enthalpy of formation (Gas)
                        • Enthalpy of formation (Liquid)
                          1 experimental data points
                        • Enthalpy of formation (Crystal)

                      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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