{
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      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
      "max_abs_error": 57.355313183038106,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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        -86927.52516440906,
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        -91.37795412472087,
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        2.5981994743525396e-05,
        -5.639320396685642e-08,
        5.228512800492164e-11
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        -0.004735402288058878
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      "Tmax": 209.38000000000002,
      "Tmin": 115.77,
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
      "max_abs_error": 122.31747916979248,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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    "melting_line": {
      "BibTeX": "Michels-PHYSICA-1962",
      "T_m": 115.95,
      "parts": [
        {
          "T_0": 1,
          "T_max": 170,
          "T_min": 115.77,
          "a": 109479.2307,
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          "p_0": -237497645.7
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      "T_r": 209.48,
      "Tmax": 209.4799999999995,
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      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
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        2.937,
        13.131,
        15.629
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      "type": "pV",
      "using_tau_r": true
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      "T_r": 209.48,
      "Tmax": 209.4799999999995,
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      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))",
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        18068.951065200818,
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      "type": "rhoLnoexp",
      "using_tau_r": false
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      "Tmax": 209.4799999999995,
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      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))",
      "max_abserror_percentage": 0.25111252948395446,
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        5.670498376648386,
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        1.593,
        3.18,
        4.851,
        14.775
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        -4.419083618408286e-08,
        9.68620614882737e-11,
        -9.035831214849345e-14
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      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
      "max_abs_error": 0.26922373954649803,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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        -2.187416032986338e-05,
        9.152355135019001e-08,
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      "Tmax": 209.38000000000002,
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      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
      "max_abs_error": 0.5766349387982923,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012",
      "Tc": 209.48,
      "a": [
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      ],
      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)",
      "n": [
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  "EOS": [
    {
      "BibTeX_CP0": "",
      "BibTeX_EOS": "Lemmon-JCED-2006",
      "STATES": {
        "hs_anchor": {
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          "T_units": "K",
          "hmolar": 7483.974907938664,
          "hmolar_units": "J/mol",
          "p": 8410102.077735784,
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          "rhomolar": 9765.0,
          "rhomolar_units": "mol/m^3",
          "smolar": 39.269520310770154,
          "smolar_units": "J/mol/K"
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        "reducing": {
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          "T_units": "K",
          "hmolar": 6392.582330740961,
          "hmolar_units": "J/mol",
          "p": 5525000,
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          "rhomolar": 10850,
          "rhomolar_units": "mol/m^3",
          "smolar": 35.5694112342172,
          "smolar_units": "J/mol/K"
        },
        "sat_min_liquid": {
          "T": 115.77,
          "T_units": "K",
          "hmolar": -172.850419493033,
          "hmolar_units": "J/mol",
          "p": 73502.83747636901,
          "p_units": "Pa",
          "rhomolar": 29197.322406782336,
          "rhomolar_units": "mol/m^3",
          "smolar": -1.4598881223954177,
          "smolar_units": "J/mol/K"
        },
        "sat_min_vapor": {
          "T": 115.77,
          "T_units": "K",
          "hmolar": 8910.793157803842,
          "hmolar_units": "J/mol",
          "p": 73502.83747636901,
          "p_units": "Pa",
          "rhomolar": 78.41800107700799,
          "rhomolar_units": "mol/m^3",
          "smolar": 77.00290899983369,
          "smolar_units": "J/mol/K"
        }
      },
      "T_max": 750,
      "T_max_units": "K",
      "Ttriple": 115.77,
      "Ttriple_units": "K",
      "acentric": -0.00089,
      "acentric_units": "-",
      "alpha0": [
        {
          "a1": -3.7506412806,
          "a2": 3.7798018435,
          "type": "IdealGasHelmholtzLead"
        },
        {
          "a": 1.5,
          "type": "IdealGasHelmholtzLogTau"
        }
      ],
      "alphar": [
        {
          "d": [
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            1,
            2,
            3,
            7,
            2,
            5,
            1,
            4,
            3,
            4
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          "l": [
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            0,
            0,
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            1,
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            2,
            2,
            3,
            3
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            -0.022897,
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          "type": "ResidualHelmholtzPower"
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      ],
      "critical_region_splines": {
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        "T_min": 209.4785594520556,
        "_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": [
          7.439981467718757e-10,
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      "gas_constant": 8.314472,
      "gas_constant_units": "J/mol/K",
      "molar_mass": 0.083798,
      "molar_mass_units": "kg/mol",
      "p_max": 200000000,
      "p_max_units": "Pa",
      "pseudo_pure": false
    }
  ],
  "INFO": {
    "2DPNG_URL": "http://www.chemspider.com/ImagesHandler.ashx?id=5223",
    "ALIASES": [
      "krypton",
      "KRYPTON"
    ],
    "CAS": "7439-90-9",
    "CHEMSPIDER_ID": 5223,
    "ENVIRONMENTAL": {
      "ASHRAE34": "UNKNOWN",
      "FH": 0,
      "GWP100": -1.0,
      "GWP20": -1.0,
      "GWP500": -1.0,
      "HH": 0,
      "Name": "Krypton",
      "ODP": -1.0,
      "PH": 0
    },
    "FORMULA": "Kr_{1}",
    "INCHI_KEY": "DNNSSWSSYDEUBZ-UHFFFAOYSA-N",
    "INCHI_STRING": "InChI=1S/Kr",
    "NAME": "Krypton",
    "REFPROP_NAME": "KRYPTON",
    "SMILES": "[Kr]"
  },
  "STATES": {
    "critical": {
      "T": 209.48000000000002,
      "T_units": "K",
      "hmolar": 6391.985066117634,
      "hmolar_units": "J/mol",
      "p": 5525000.0,
      "p_units": "Pa",
      "rhomolar": 10850.0,
      "rhomolar_units": "mol/m^3",
      "smolar": 35.567990683867926,
      "smolar_units": "J/mol/K"
    },
    "triple_liquid": {
      "T": 115.77,
      "T_units": "K",
      "hmolar": -172.850419493033,
      "hmolar_units": "J/mol",
      "p": 73502.83747636901,
      "p_units": "Pa",
      "rhomolar": 29197.322406782336,
      "rhomolar_units": "mol/m^3",
      "smolar": -1.4598881223954177,
      "smolar_units": "J/mol/K"
    },
    "triple_vapor": {
      "T": 115.77,
      "T_units": "K",
      "hmolar": 8910.793157803842,
      "hmolar_units": "J/mol",
      "p": 73502.83747636901,
      "p_units": "Pa",
      "rhomolar": 78.41800107700799,
      "rhomolar_units": "mol/m^3",
      "smolar": 77.00290899983369,
      "smolar_units": "J/mol/K"
    }
  }
}