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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)
      2 experimental data points
    • Triple point temperature (Crystal 3, Crystal 2, and Gas)
      1 experimental data points
    • Triple point temperature (Crystal 2, Crystal 1, and Gas)
      1 experimental data points
  • Phase boundary pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
    Temperature from 168.231 K to 222.506 K
    42 experimental data points
    • Enthalpy of phase transition
      • Enthalpy of phase transition (Crystal 3 to Crystal 2 in equilibrium with Gas)
        2 experimental data points
      • Enthalpy of phase transition (Crystal 1 to Liquid in equilibrium with Gas)
        1 experimental data points
      • Enthalpy of phase transition (Crystal 2 to Crystal 1 in equilibrium with Gas)
        1 experimental data points
    • Enthalpy of vaporization or sublimation (Crystal 1 to Gas) as a function of Temperature
      Temperature from 168.231 K to 222.506 K
      • Heat capacity at saturation pressure
        • Heat capacity at saturation pressure (Crystal 3 in equilibrium with Gas) as a function of Temperature
          Temperature from 4 K to 70.23 K
          50 experimental data points
        • Heat capacity at saturation pressure (Crystal 2 in equilibrium with Gas) as a function of Temperature
          Temperature from 70.23 K to 125.614 K
          50 experimental data points
        • Heat capacity at saturation pressure (Crystal 1 in equilibrium with Gas) as a function of Temperature
          Temperature from 125.614 K to 222.506 K
          44 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 3 in equilibrium with Gas) as a function of Temperature
            Temperature from 4 K to 70.23 K
          • Enthalpy (Crystal 2 in equilibrium with Gas) as a function of Temperature
            Temperature from 70.23 K to 125.614 K
          • Enthalpy (Crystal 1 in equilibrium with Gas) as a function of Temperature
            Temperature from 125.614 K to 222.506 K
            22 experimental data points
          • Enthalpy (Ideal Gas) as a function of Temperature
            Temperature from 50 K to 3000 K
        • Entropy
          • Entropy (Crystal 3 in equilibrium with Gas) as a function of Temperature
            Temperature from 4 K to 70.23 K
          • Entropy (Crystal 2 in equilibrium with Gas) as a function of Temperature
            Temperature from 70.23 K to 125.614 K
          • Entropy (Crystal 1 in equilibrium with Gas) as a function of Temperature
            Temperature from 125.614 K to 222.506 K
          • Entropy (Ideal Gas) as a function of Temperature and Pressure
            Temperature from 50 K to 3000 K
        • Viscosity (Liquid in equilibrium with Gas) as a function of Temperature
          Temperature from 223.338 K to 236.429 K
          7 experimental data points
           
           
           
           
           
           
           
           
          Compound Information 
           
           
           
           
           
          Name: hydrogen iodide
          Formula: HI
          Molar Mass: 127.91247
          Additional Names: anhydrous hydriodic acid
          hydriodic acid
          hydroiodic acid
          hydrogen monoiodide
          hydrogen iodide (HI)
          Image of hydrogen iodide