{
  "ALIASES": [
    "ipentane", 
    "R601a", 
    "ISOPENTANE"
  ], 
  "ANCILLARIES": {
    "hL": {
      "A": [
        -90130.35710842158, 
        407.16059505475016, 
        -1.3138893313886317, 
        0.005590751570923586, 
        -1.587710367502304e-05, 
        2.5168267404648672e-08, 
        -2.1143037200252435e-11, 
        6.733811692461848e-15
      ], 
      "B": [
        1, 
        -0.0021441483456487113
      ], 
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", 
      "max_abs_error": 425.4010919385255, 
      "max_abs_error_units": "J/mol", 
      "type": "rational_polynomial"
    }, 
    "hLV": {
      "A": [
        47154.76961904714, 
        -258.60058597934443, 
        0.8441213768167075, 
        -0.0015974225798768423, 
        -1.5394517779202809e-06, 
        1.4231532204833666e-08, 
        -2.700877284425972e-11, 
        1.8451831605833533e-14
      ], 
      "B": [
        1, 
        -0.002141485604589175
      ], 
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", 
      "max_abs_error": 965.2804228940715, 
      "max_abs_error_units": "J/mol", 
      "type": "rational_polynomial"
    }, 
    "melting_line": {
      "BibTeX": "Reeves-JCP-1964", 
      "T_m": 113.22999999999999, 
      "parts": [
        {
          "T_0": 112.5, 
          "T_max": 212.16, 
          "T_min": 112.65, 
          "a": 591600000.0, 
          "c": 1.563, 
          "p_0": 0
        }
      ], 
      "type": "Simon"
    }, 
    "pL": {
      "T_r": 460.35, 
      "Tmax": 460.3499999999989, 
      "Tmin": 112.65000000000002, 
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.051564707572182567, 
      "n": [
        -6.666263491957704, 
        0.4857997813609446, 
        43.79186706759248, 
        -46.695896367051155, 
        -0.7987335343861153, 
        -2.152696717962993
      ], 
      "reducing_value": 3378000.0, 
      "t": [
        0.984, 
        1.34, 
        3.251, 
        3.271, 
        6.059, 
        15.448
      ], 
      "type": "pL", 
      "using_tau_r": true
    }, 
    "pV": {
      "T_r": 460.35, 
      "Tmax": 460.3499999999989, 
      "Tmin": 112.65000000000002, 
      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.016885314228098913, 
      "n": [
        -8.6020554503746, 
        4.597427498957886, 
        -2.60028502453596, 
        -3.205323615957216, 
        0.893056340939176, 
        -3.317655495530999
      ], 
      "reducing_value": 3378000.0, 
      "t": [
        1.02, 
        1.348, 
        1.678, 
        4.158, 
        11.692, 
        14.291
      ], 
      "type": "pV", 
      "using_tau_r": true
    }, 
    "rhoL": {
      "T_r": 460.35, 
      "Tmax": 460.3499999999989, 
      "Tmin": 112.65000000000002, 
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.5609059920063109, 
      "n": [
        1.90090139367392, 
        0.5608577220827222, 
        0.291792033747788, 
        -0.22951340206902662, 
        50.602054710991816, 
        -59.20907806248923
      ], 
      "reducing_value": 3271.0, 
      "t": [
        0.335, 
        0.852, 
        2.009, 
        4.806, 
        14.584, 
        15.417
      ], 
      "type": "rhoLnoexp", 
      "using_tau_r": false
    }, 
    "rhoV": {
      "T_r": 460.35, 
      "Tmax": 460.3499999999989, 
      "Tmin": 112.65000000000002, 
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 1.1809305044249263, 
      "n": [
        -0.293842156388657, 
        -3.3757748736495574, 
        -2.160437982604624, 
        -8.713491274417024, 
        4.916720756118398, 
        -0.9275607204099507
      ], 
      "reducing_value": 3271.0, 
      "t": [
        0.192, 
        0.477, 
        1.313, 
        5.085, 
        6.047, 
        14.238
      ], 
      "type": "rhoV", 
      "using_tau_r": true
    }, 
    "sL": {
      "A": [
        -500.29658567054486, 
        5.317314035347854, 
        -0.03702625073527074, 
        0.00017942138753406091, 
        -5.548010872762936e-07, 
        1.042192599128138e-09, 
        -1.0882464867570116e-12, 
        4.84176665079205e-16
      ], 
      "B": [
        1, 
        -0.0020953738348819975
      ], 
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", 
      "max_abs_error": 1.3276697617159812, 
      "max_abs_error_units": "J/mol/K", 
      "type": "rational_polynomial"
    }, 
    "sLV": {
      "A": [
        1426.6548934034195, 
        -24.434482496091196, 
        0.20869076665459838, 
        -0.0010610657221732712, 
        3.3293375261587823e-06, 
        -6.3282501398863124e-09, 
        6.683136094951893e-12, 
        -3.0091226859884524e-15
      ], 
      "B": [
        1, 
        -0.001978987204740525
      ], 
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", 
      "max_abs_error": 3.7395551675646965, 
      "max_abs_error_units": "J/mol/K", 
      "type": "rational_polynomial"
    }, 
    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012", 
      "Tc": 460.35, 
      "a": [
        0.051
      ], 
      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
      "n": [
        1.209
      ]
    }
  }, 
  "CAS": "78-78-4", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "A3", 
    "FH": 4, 
    "GWP100": -1.0, 
    "GWP20": -1.0, 
    "GWP500": -1.0, 
    "HH": 1, 
    "Name": "Isopentane", 
    "ODP": -1.0, 
    "PH": 0
  }, 
  "EOS": [
    {
      "BibTeX_CP0": "", 
      "BibTeX_EOS": "Lemmon-JCED-2006", 
      "STATES": {
        "hs_anchor": {
          "T": 506.38500000000005, 
          "T_units": "K", 
          "hmolar": 46561.46210015001, 
          "hmolar_units": "J/mol", 
          "p": 5570042.134881059, 
          "p_units": "Pa", 
          "rhomolar": 2943.9, 
          "rhomolar_units": "mol/m^3", 
          "smolar": 112.26852231198176, 
          "smolar_units": "J/mol/K"
        }, 
        "reducing": {
          "T": 460.35, 
          "T_units": "K", 
          "p": 3378000, 
          "p_units": "Pa", 
          "rhomolar": 3271, 
          "rhomolar_units": "mol/m^3"
        }, 
        "sat_min_liquid": {
          "T": 112.65, 
          "T_units": "K", 
          "p": 8.941666803979555e-05, 
          "p_units": "Pa", 
          "rhomolar": 10935.8893141883, 
          "rhomolar_units": "mol/m^3"
        }, 
        "sat_min_vapor": {
          "T": 112.65, 
          "T_units": "K", 
          "p": 8.951755070710578e-05, 
          "p_units": "Pa", 
          "rhomolar": 9.557456291679775e-08, 
          "rhomolar_units": "mol/m^3"
        }
      }, 
      "T_max": 500, 
      "T_max_units": "K", 
      "Ttriple": 112.65, 
      "Ttriple_units": "K", 
      "accentric": 0.2274, 
      "accentric_units": "-", 
      "alpha0": [
        {
          "a1": 2.5822330405, 
          "a2": 1.1609103419, 
          "type": "IdealGasHelmholtzLead"
        }, 
        {
          "a": 3, 
          "type": "IdealGasHelmholtzLogTau"
        }, 
        {
          "n": [
            7.4056, 
            9.5772, 
            15.765, 
            12.119
          ], 
          "t": [
            0.9601390246551537, 
            2.409036602584989, 
            4.494406429890301, 
            9.108287172803301
          ], 
          "type": "IdealGasHelmholtzPlanckEinstein"
        }
      ], 
      "alphar": [
        {
          "d": [
            1, 
            1, 
            1, 
            2, 
            3, 
            7, 
            2, 
            5, 
            1, 
            4, 
            3, 
            4
          ], 
          "l": [
            0, 
            0, 
            0, 
            0, 
            0, 
            0, 
            1, 
            1, 
            2, 
            2, 
            3, 
            3
          ], 
          "n": [
            1.0963, 
            -3.0402, 
            1.0317, 
            -0.1541, 
            0.11535, 
            0.00029809, 
            0.39571, 
            -0.045881, 
            -0.35804, 
            -0.10107, 
            -0.035484, 
            0.018156
          ], 
          "t": [
            0.25, 
            1.125, 
            1.5, 
            1.375, 
            0.25, 
            0.875, 
            0.625, 
            1.75, 
            3.625, 
            3.625, 
            14.5, 
            12
          ], 
          "type": "ResidualHelmholtzPower"
        }
      ], 
      "critical_region_splines": {
        "T_max": 460.35, 
        "T_min": 460.34999999967744, 
        "_note": "Coefficients for the critical cubic spline.  T = c[0]*rho^3 + c[1]*rho^2 + c[2]*rho + c[3] with rho in mol/m^3 and T in K", 
        "cL": [
          0.0, 
          0.0, 
          -1.3800199316984639e-08, 
          460.350045140452
        ], 
        "cV": [
          0.0, 
          0.0, 
          1.384341277338779e-08, 
          460.34995471819684
        ], 
        "rhomolar_max": 3271.023375025736, 
        "rhomolar_min": 3270.9766981300554
      }, 
      "gas_constant": 8.314472, 
      "gas_constant_units": "J/mol/K", 
      "molar_mass": 0.07214878, 
      "molar_mass_units": "kg/mol", 
      "p_max": 1000000000, 
      "p_max_units": "Pa", 
      "pseudo_pure": false
    }
  ], 
  "NAME": "Isopentane", 
  "REFPROP_NAME": "IPENTANE", 
  "STATES": {
    "critical": {
      "T": 460.35, 
      "T_units": "K", 
      "p": 3378000.0, 
      "p_units": "Pa", 
      "rhomolar": 3271.0, 
      "rhomolar_units": "mol/m^3"
    }, 
    "triple_liquid": {
      "T": 112.65, 
      "T_units": "K", 
      "p": 8.941666803979555e-05, 
      "p_units": "Pa", 
      "rhomolar": 10935.8893141883, 
      "rhomolar_units": "mol/m^3"
    }, 
    "triple_vapor": {
      "T": 112.65, 
      "T_units": "K", 
      "p": 8.951755070710578e-05, 
      "p_units": "Pa", 
      "rhomolar": 9.557456291679775e-08, 
      "rhomolar_units": "mol/m^3"
    }
  }
}