Compound Information 

Name: 5-pentanelactam
Formula: C5H9NO
Molar Mass: 99.133
Additional Names: valerolactam
2-piperidinone
pentanoic acid, 5-amino-, lactam
.alpha.-piperidone
2-piperidone
.delta.-valerolactam
5-pentanolactam
Image of 5-pentanelactam
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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 0.0165177 kPa to 4775.34 kPa
            • Phase boundary pressure (Liquid in equilibrium with Gas) as a function of Temperature
              Temperature from 342.279 K to 785 K
              1 experimental data points
              • Critical density (Liquid and Gas)
                • Density
                  • Density (Liquid in equilibrium with Gas) as a function of Temperature
                    Temperature from 342.279 K to 785 K
                  • Density (Gas) as a function of Temperature and Pressure
                    Temperature from 388.883 K to 771.991 K
                    Pressure from 0.0006 kPa to 646.175 kPa
                  • Density (Gas in equilibrium with Liquid) as a function of Temperature
                    Temperature from 621.985 K to 785 K
                • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
                  2 experimental data points
                  • Enthalpy of vaporization or sublimation (Liquid to Gas) as a function of Temperature
                    Temperature from 342.279 K to 785 K
                    • Heat capacity at saturation pressure
                      • Heat capacity at saturation pressure (Liquid in equilibrium with Gas) as a function of Temperature
                        Temperature from 342.279 K to 349.973 K
                        7 experimental data points
                      • Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
                        Temperature from 61 K to 294.987 K
                        48 experimental data points
                    • Heat capacity at constant pressure (Ideal Gas) as a function of Temperature
                      Temperature from 50 K to 1500 K
                      • Enthalpy (Ideal Gas) as a function of Temperature
                        Temperature from 50 K to 1500 K
                        • Entropy
                          • Entropy (Ideal Gas) as a function of Temperature and Pressure
                            Temperature from 50 K to 1500 K
                          • Entropy (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 342.279 K to 349.973 K
                        • Viscosity
                          • Viscosity (Gas) as a function of Temperature and Pressure
                            Temperature from 550 K to 1170 K
                          • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 350 K to 780 K
                        • Thermal conductivity
                          • Thermal conductivity (Gas) as a function of Temperature and Pressure
                            Temperature from 550 K to 1170 K
                          • Thermal conductivity (Liquid in equilibrium with Gas) as a function of Temperature
                            Temperature from 350 K to 700 K
                        • Enthalpy of formation (Crystal)
                          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

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