{
  "ANCILLARIES": {
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        2.3584227819664906e-09,
        -1.1640351439756232e-12
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      "B": [
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      "Tmax": 388.28,
      "Tmin": 233.35,
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
      "max_abs_error": 209.80633134013078,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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        6.41541353970224e-06,
        -7.274991487312669e-09,
        3.5245148421487234e-12
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      "Tmax": 388.28,
      "Tmin": 233.35,
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy",
      "max_abs_error": 449.9345433735564,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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      "Tmax": 388.37999999999914,
      "Tmin": 233.35,
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))",
      "max_abserror_percentage": 0.019138662643680693,
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        8.53184439256971,
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        3.687,
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      "type": "pL",
      "using_tau_r": true
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    "rhoL": {
      "T_r": 388.38,
      "Tmax": 388.37999999999914,
      "Tmin": 233.35,
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))",
      "max_abserror_percentage": 0.5464670263682914,
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        382.2970506693918,
        -475.82711917828664,
        190.84639492080177,
        -142.60801162239488
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      "reducing_value": 3099.38,
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        2.269,
        3.362,
        4.954
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      "type": "rhoLnoexp",
      "using_tau_r": false
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    "rhoV": {
      "T_r": 388.38,
      "Tmax": 388.37999999999914,
      "Tmin": 233.35,
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))",
      "max_abserror_percentage": 0.2883096383379913,
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        4685.608624866425
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      "reducing_value": 3099.38,
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      "type": "rhoV",
      "using_tau_r": true
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        -0.00038307686953836307,
        1.4628864227106823e-06,
        -3.2569547059529292e-09,
        3.958840339199141e-12,
        -2.036192981950933e-15
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      "B": [
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      "Tmax": 388.28,
      "Tmin": 233.35,
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
      "max_abs_error": 0.5402880405253079,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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        19.605275995057834,
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        0.0015938651700138993,
        -5.805980223002076e-06,
        1.2401116774437711e-08,
        -1.4502826328173382e-11,
        7.19691776460456e-15
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      "B": [
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        -0.0025572789472560593
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      "Tmax": 388.28,
      "Tmin": 233.35,
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy",
      "max_abs_error": 1.1510941178453304,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
    },
    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012",
      "Tc": 388.38,
      "a": [
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)",
      "n": [
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    }
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    {
      "BibTeX_CP0": "Platzer-BOOK-1990",
      "BibTeX_EOS": "Platzer-BOOK-1990",
      "STATES": {
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          "hmolar": 80910.32651491373,
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          "smolar": 314.20614745923746,
          "smolar_units": "J/mol/K"
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        "reducing": {
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          "hmolar": 71730.94762603201,
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          "rhomolar_units": "mol/m^3",
          "smolar": 293.2686676934833,
          "smolar_units": "J/mol/K"
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        "sat_min_liquid": {
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          "hmolar": 31957.19563750956,
          "hmolar_units": "J/mol",
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          "rhomolar_units": "mol/m^3",
          "smolar": 168.26971481332566,
          "smolar_units": "J/mol/K"
        },
        "sat_min_vapor": {
          "T": 233.35,
          "T_units": "K",
          "hmolar": 57605.81616033167,
          "hmolar_units": "J/mol",
          "p": 19461.056081372997,
          "p_units": "Pa",
          "rhomolar": 10.156986147247,
          "rhomolar_units": "mol/m^3",
          "smolar": 278.18445707047107,
          "smolar_units": "J/mol/K"
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      "T_max": 623,
      "T_max_units": "K",
      "Ttriple": 233.35,
      "Ttriple_units": "K",
      "acentric": 0.355345,
      "acentric_units": "-",
      "alpha0": [
        {
          "a1": 0,
          "a2": 0,
          "type": "IdealGasHelmholtzLead"
        },
        {
          "a": -1,
          "type": "IdealGasHelmholtzLogTau"
        },
        {
          "T0": 298.15,
          "Tc": 388.38,
          "c": [
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            0.06984062483537816,
            -6.093191543939451e-05,
            1.857067747732578e-08
          ],
          "t": [
            0,
            1,
            2,
            3
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          "type": "IdealGasHelmholtzCP0PolyT"
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        {
          "a1": -32.5172232538152,
          "a2": 20.7826742209953,
          "reference": "IIR",
          "type": "IdealGasHelmholtzEnthalpyEntropyOffset"
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      "alphar": [
        {
          "d": [
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            1,
            1,
            1,
            2,
            2,
            2,
            3,
            3,
            4,
            4,
            5,
            0,
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          "l": [
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          "n": [
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            4,
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            3,
            4,
            5
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          "type": "ResidualHelmholtzPower"
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        {
          "d": [
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          "g": [
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          "t": [
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          "type": "ResidualHelmholtzExponential"
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      ],
      "critical_region_splines": {
        "T_max": 388.38,
        "T_min": 388.29054792405356,
        "_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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          336.509525023081
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        "cV": [
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          401.01153126933485
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        "rhomolar_max": 3333.3908947283726,
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      "gas_constant": 8.31451,
      "gas_constant_units": "J/mol/K",
      "molar_mass": 0.2000312,
      "molar_mass_units": "kg/mol",
      "p_max": 60000000,
      "p_max_units": "Pa",
      "pseudo_pure": false
    }
  ],
  "INFO": {
    "2DPNG_URL": "http://www.chemspider.com/ImagesHandler.ashx?id=13846040",
    "ALIASES": [],
    "CAS": "115-25-3",
    "CHEMSPIDER_ID": 13846040,
    "ENVIRONMENTAL": {
      "ASHRAE34": "A1",
      "FH": 0,
      "GWP100": 10300.0,
      "GWP20": 7310.0,
      "GWP500": 14700.0,
      "HH": 1,
      "Name": "RC318",
      "ODP": -1.0,
      "PH": 2
    },
    "FORMULA": "C_{4}F_{8}",
    "INCHI_KEY": "BCCOBQSFUDVTJQ-UHFFFAOYSA-N",
    "INCHI_STRING": "InChI=1S/C4F8/c5-1(6)2(7,8)4(11,12)3(1,9)10",
    "NAME": "RC318",
    "REFPROP_NAME": "RC318",
    "SMILES": "C1(C(C(C1(F)F)(F)F)(F)F)(F)F"
  },
  "STATES": {
    "critical": {
      "T": 388.38,
      "T_units": "K",
      "hmolar": 71723.09920314865,
      "hmolar_units": "J/mol",
      "p": 2777500.0,
      "p_units": "Pa",
      "rhomolar": 3099.38,
      "rhomolar_units": "mol/m^3",
      "smolar": 293.25026117992604,
      "smolar_units": "J/mol/K"
    },
    "triple_liquid": {
      "T": 233.35,
      "T_units": "K",
      "hmolar": 31957.19563750956,
      "hmolar_units": "J/mol",
      "p": 19461.056081372997,
      "p_units": "Pa",
      "rhomolar": 8645.18328651729,
      "rhomolar_units": "mol/m^3",
      "smolar": 168.26971481332566,
      "smolar_units": "J/mol/K"
    },
    "triple_vapor": {
      "T": 233.35,
      "T_units": "K",
      "hmolar": 57605.81616033167,
      "hmolar_units": "J/mol",
      "p": 19461.056081372997,
      "p_units": "Pa",
      "rhomolar": 10.156986147247,
      "rhomolar_units": "mol/m^3",
      "smolar": 278.18445707047107,
      "smolar_units": "J/mol/K"
    }
  },
  "TRANSPORT": {
    "conductivity": {
      "BibTeX": "Huber-IECR-2003",
      "f_int": {
        "T_reducing": 1.0,
        "T_reducing_units": "K",
        "a": [
          0.00135697,
          -1.11635e-07
        ],
        "t": [
          0,
          1
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      },
      "psi": {
        "a": [
          1.5249,
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        ],
        "rhomolar_reducing": 3099.0,
        "rhomolar_reducing_units": "mol/m^3",
        "t": [
          0,
          1
        ]
      },
      "q_D": 2808318238.622801,
      "q_D_units": "m",
      "reference_fluid": "Propane",
      "type": "ECS"
    },
    "viscosity": {
      "BibTeX": "Huber-IECR-2003",
      "epsilon_over_k": 299.76,
      "epsilon_over_k_units": "K",
      "psi": {
        "a": [
          1.21141,
          -0.0337573,
          0.0
        ],
        "rhomolar_reducing": 3099.0,
        "rhomolar_reducing_units": "mol/m^3",
        "t": [
          0,
          1,
          2
        ]
      },
      "reference_fluid": "Propane",
      "sigma_eta": 5.947e-10,
      "sigma_eta_units": "m",
      "type": "ECS"
    }
  }
}