{
  "ANCILLARIES": {
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        -1.0358243527184946e-07,
        1.828746026290058e-10,
        -1.3331847526159053e-13
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      "Tmax": 344.91999999999996,
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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": 240.5387300704815,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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    "hLV": {
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        30569.82796801364,
        63.279424417861996,
        -4.147712978479395,
        0.040465458588006875,
        -0.0002084228115298255,
        6.096456648796958e-07,
        -9.585021616085793e-10,
        6.341202227062449e-13
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        -0.0028652191455249246
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      "Tmax": 344.91999999999996,
      "Tmin": 125.45,
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
      "max_abs_error": 517.0323482530728,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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      "T_r": 345.02,
      "Tmax": 345.01999999999936,
      "Tmin": 125.45000000000002,
      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
      "max_abserror_percentage": 0.018024375182712493,
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        19.087798455338692,
        -17.233089915234846,
        -1.422792519033736,
        -3.3648176664863447,
        -10.213938754091759
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      "reducing_value": 2640000.0,
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        2.07,
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        17.759
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      "type": "pV",
      "using_tau_r": true
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    "rhoL": {
      "T_r": 345.02,
      "Tmax": 345.01999999999936,
      "Tmin": 125.45000000000002,
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))",
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        3.674253188196436,
        -3.58395389631866,
        5.552496612344577,
        -211.54319300173208
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      "reducing_value": 3340.0000000000005,
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        19.277
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      "type": "rhoLnoexp",
      "using_tau_r": false
    },
    "rhoV": {
      "T_r": 345.02,
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      "Tmin": 125.45000000000002,
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))",
      "max_abserror_percentage": 0.09201959542241012,
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        8.879
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      "type": "rhoV",
      "using_tau_r": true
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        -7.156817080254555e-07,
        1.5015561745790405e-09,
        -1.754684267168894e-12,
        8.671175087568152e-16
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      "B": [
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      "Tmin": 125.45,
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
      "max_abs_error": 0.7519344810011042,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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        0.22883011227001343,
        -0.001299324463336886,
        4.5877482226187245e-06,
        -9.883015568222353e-09,
        1.1902023201051958e-11,
        -6.134129307797647e-15
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        -0.002855758696388894
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      "Tmax": 344.91999999999996,
      "Tmin": 125.45,
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
      "max_abs_error": 1.7631265870209125,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012",
      "Tc": 345.02,
      "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": {
          "T": 379.522,
          "T_units": "K",
          "hmolar": 64418.41576334056,
          "hmolar_units": "J/mol",
          "p": 4431361.108447598,
          "p_units": "Pa",
          "rhomolar": 3006.000000000001,
          "rhomolar_units": "mol/m^3",
          "smolar": 267.64678100020603,
          "smolar_units": "J/mol/K"
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        "reducing": {
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          "hmolar_units": "J/mol",
          "p": 2640000,
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          "rhomolar": 3340.000000000001,
          "rhomolar_units": "mol/m^3",
          "smolar": 248.84276210530032,
          "smolar_units": "J/mol/K"
        },
        "sat_min_liquid": {
          "T": 125.45,
          "T_units": "K",
          "hmolar": 12346.066680427975,
          "hmolar_units": "J/mol",
          "p": 2.018573582236092,
          "p_units": "Pa",
          "rhomolar": 10687.00507449543,
          "rhomolar_units": "mol/m^3",
          "smolar": 57.735566827185586,
          "smolar_units": "J/mol/K"
        },
        "sat_min_vapor": {
          "T": 125.45,
          "T_units": "K",
          "hmolar": 38916.72500440882,
          "hmolar_units": "J/mol",
          "p": 2.01857482644654,
          "p_units": "Pa",
          "rhomolar": 0.0019353038719978387,
          "rhomolar_units": "mol/m^3",
          "smolar": 269.53833819929,
          "smolar_units": "J/mol/K"
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      },
      "T_max": 440,
      "T_max_units": "K",
      "Ttriple": 125.45,
      "Ttriple_units": "K",
      "acentric": 0.3172,
      "acentric_units": "-",
      "alpha0": [
        {
          "a1": -15.6587335175,
          "a2": 11.4531412796,
          "type": "IdealGasHelmholtzLead"
        },
        {
          "a": 3,
          "type": "IdealGasHelmholtzLogTau"
        },
        {
          "n": [
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            7.2692,
            11.599
          ],
          "t": [
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            1.724537707958959,
            4.315691843951075
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          "type": "IdealGasHelmholtzPlanckEinstein"
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      "alphar": [
        {
          "d": [
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            3,
            7,
            1,
            2,
            5,
            1,
            1,
            4,
            2
          ],
          "l": [
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            1,
            1,
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            2,
            2,
            2,
            3
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          "n": [
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            -0.025147,
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            -0.027969,
            -0.1833,
            -0.02163
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            6.5,
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          "type": "ResidualHelmholtzPower"
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      "critical_region_splines": {
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        "T_min": 345.01867131966134,
        "_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": [
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      "gas_constant": 8.314472,
      "gas_constant_units": "J/mol/K",
      "molar_mass": 0.18801933,
      "molar_mass_units": "kg/mol",
      "p_max": 20000000,
      "p_max_units": "Pa",
      "pseudo_pure": false
    }
  ],
  "INFO": {
    "2DPNG_URL": "http://www.chemspider.com/ImagesHandler.ashx?id=6192",
    "ALIASES": [],
    "CAS": "76-19-7",
    "CHEMSPIDER_ID": 6192,
    "ENVIRONMENTAL": {
      "ASHRAE34": "A1",
      "FH": 1,
      "GWP100": 8830.0,
      "GWP20": 6310.0,
      "GWP500": 12500.0,
      "HH": 2,
      "Name": "R218",
      "ODP": -1.0,
      "PH": 1
    },
    "FORMULA": "C_{3}F_{8}",
    "INCHI_KEY": "QYSGYZVSCZSLHT-UHFFFAOYSA-N",
    "INCHI_STRING": "InChI=1S/C3F8/c4-1(5,2(6,7)8)3(9,10)11",
    "NAME": "R218",
    "REFPROP_NAME": "R218",
    "SMILES": "C(C(F)(F)F)(C(F)(F)F)(F)F"
  },
  "STATES": {
    "critical": {
      "T": 345.02,
      "T_units": "K",
      "hmolar": 57042.182437460724,
      "hmolar_units": "J/mol",
      "p": 2640000.0,
      "p_units": "Pa",
      "rhomolar": 3340.0000000000005,
      "rhomolar_units": "mol/m^3",
      "smolar": 248.82637544333176,
      "smolar_units": "J/mol/K"
    },
    "triple_liquid": {
      "T": 125.45,
      "T_units": "K",
      "hmolar": 12346.066680427975,
      "hmolar_units": "J/mol",
      "p": 2.018573582236092,
      "p_units": "Pa",
      "rhomolar": 10687.00507449543,
      "rhomolar_units": "mol/m^3",
      "smolar": 57.735566827185586,
      "smolar_units": "J/mol/K"
    },
    "triple_vapor": {
      "T": 125.45,
      "T_units": "K",
      "hmolar": 38916.72500440882,
      "hmolar_units": "J/mol",
      "p": 2.01857482644654,
      "p_units": "Pa",
      "rhomolar": 0.0019353038719978387,
      "rhomolar_units": "mol/m^3",
      "smolar": 269.53833819929,
      "smolar_units": "J/mol/K"
    }
  },
  "TRANSPORT": {
    "conductivity": {
      "BibTeX": "Huber-IECR-2003",
      "f_int": {
        "T_reducing": 1.0,
        "T_reducing_units": "K",
        "a": [
          0.000892659,
          1.14912e-06
        ],
        "t": [
          0,
          1
        ]
      },
      "psi": {
        "a": [
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          -0.0758811
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        "rhomolar_reducing": 3340.0,
        "rhomolar_reducing_units": "mol/m^3",
        "t": [
          0,
          1
        ]
      },
      "q_D": 917069412.9838686,
      "q_D_units": "m",
      "reference_fluid": "Propane",
      "type": "ECS"
    },
    "viscosity": {
      "BibTeX": "Huber-IECR-2003",
      "epsilon_over_k": 266.35,
      "epsilon_over_k_units": "K",
      "psi": {
        "a": [
          1.10225,
          -0.00550442,
          0.0
        ],
        "rhomolar_reducing": 3340.0,
        "rhomolar_reducing_units": "mol/m^3",
        "t": [
          0,
          1,
          2
        ]
      },
      "reference_fluid": "Propane",
      "sigma_eta": 5.8e-10,
      "sigma_eta_units": "m",
      "type": "ECS"
    }
  }
}