Compound Information 

Name: ethylcyclopentane
Formula: C7H14
Molar Mass: 98.189
Additional Names: cyclopentane, ethyl-
Image of ethylcyclopentane

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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
    • Triple point temperature (Crystal 1, Liquid, and Gas)
      23 experimental data points
    • Triple point temperature (Metastable crystal, Liquid, and Gas)
      3 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 4.21002e-009 kPa to 3396.92 kPa
          • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
            Temperature from 134.031 K to 569.483 K
            42 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 134.031 K to 569.483 K
                  34 experimental data points
                • Density (Gas) as a function of Temperature and Pressure
                  Temperature from 280 K to 553 K
                  Pressure from 0.0006 kPa to 637.349 kPa
                  1 experimental data points
                • Density (Gas in equilibrium with Liquid) as a function of Temperature
                  Temperature from 457.157 K to 569.483 K
                  1 experimental data points
              • Enthalpy of phase transition
                • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                  4 experimental data points
                • Enthalpy of phase transition (Metastable crystal to Liquid in equilibrium with Gas)
                  3 experimental data points
              • Enthalpy of vaporization or sublimation (Liquid to Gas) as a function of Temperature
                Temperature from 134.031 K to 569.483 K
                • Heat capacity at saturation pressure
                  • Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                    Temperature from 13 K to 134.73 K
                    42 experimental data points
                  • Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 134.031 K to 558.093 K
                    21 experimental data points
                  • Heat capacity at saturation pressure (Metastable crystal in equilibrium with Gas) as a function of Temperature
                    Temperature from 12.64 K to 134.031 K
                    36 experimental data points
                • Heat capacity at constant pressure (Ideal Gas) as a function of Temperature
                  Temperature from 50 K to 3000 K
                  • Enthalpy
                    • Enthalpy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                      Temperature from 13 K to 134.73 K
                    • Enthalpy (Liquid in equilibrium with Gas) as a function of Temperature
                      Temperature from 134.031 K to 558.093 K
                    • Enthalpy (Ideal Gas) as a function of Temperature
                      Temperature from 50 K to 3000 K
                  • Entropy
                    • Entropy (Liquid in equilibrium with Gas) as a function of Temperature
                      Temperature from 134.031 K to 558.093 K
                      2 experimental data points
                    • Entropy (Crystal 1 in equilibrium with Gas) as a function of Temperature
                      Temperature from 13 K to 134.73 K
                    • Entropy (Ideal Gas) as a function of Temperature and Pressure
                      Temperature from 50 K to 3000 K
                  • Refractive index (Liquid) as a function of Wavelength, Temperature, and Pressure
                    Wavelength from 434 nm to 667.81 nm
                    Temperature from 291.989 K to 303.134 K
                    50 experimental data points
                    • Viscosity
                      • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 273.001 K to 560 K
                        13 experimental data points
                      • Viscosity (Gas) as a function of Temperature and Pressure
                        Temperature from 380 K to 850 K
                    • Thermal conductivity
                      • Thermal conductivity (Gas) as a function of Temperature and Pressure
                        Temperature from 380 K to 850 K
                      • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 140 K to 510 K
                    • Enthalpy of formation
                      • Enthalpy of formation (Gas)
                      • Enthalpy of formation (Liquid)
                        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

                    Compound Information
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