{
  "ALIASES": [], 
  "ANCILLARIES": {
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        141.51816109881761, 
        0.6931578673650347, 
        -0.006888785224971558, 
        2.8878465435715204e-05, 
        -7.004419976873312e-08, 
        9.341103311671954e-11, 
        -5.445775954182144e-14
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      "B": [
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        -0.0026681328507758765
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      "Tmax": 369.195, 
      "Tmin": 115.78069806980699, 
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", 
      "max_abs_error": 286.05700095637803, 
      "max_abs_error_units": "J/mol", 
      "type": "rational_polynomial"
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    "hLV": {
      "A": [
        25944.824336149803, 
        98.60594668315983, 
        -3.4186210532309906, 
        0.027797695968511744, 
        -0.00012340567080756899, 
        3.163174301636938e-07, 
        -4.4161912008633985e-10, 
        2.633224160837037e-13
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      "B": [
        1, 
        -0.0026723196618635954
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      "Tmax": 369.195, 
      "Tmin": 115.78069806980699, 
      "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", 
      "max_abs_error": 631.5726476637724, 
      "max_abs_error_units": "J/mol", 
      "type": "rational_polynomial"
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    "pL": {
      "T_r": 369.295, 
      "Tmax": 369.2949999999993, 
      "Tmin": 115.73000000000002, 
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.021684799425192303, 
      "n": [
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        -6.6171269814683065, 
        1.6782909752933965, 
        -2.5338941612118235, 
        -2.979681135700748, 
        0.4341331068854343
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      "reducing_value": 4990000.0, 
      "t": [
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        0.979, 
        1.977, 
        2.453, 
        4.897, 
        8.097
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      "type": "pL", 
      "using_tau_r": true
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      "T_r": 369.295, 
      "Tmax": 369.2949999999993, 
      "Tmin": 115.73000000000002, 
      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.01948277890697625, 
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        1.2860929616388512, 
        -0.10790119794275199, 
        -0.989473291657183, 
        -2.9393096353041623, 
        0.488431917326884
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      "reducing_value": 4990000.0, 
      "t": [
        0.999, 
        1.272, 
        1.692, 
        2.74, 
        4.539, 
        15.876
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      "type": "pV", 
      "using_tau_r": true
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    "rhoL": {
      "T_r": 369.295, 
      "Tmax": 369.2949999999993, 
      "Tmin": 115.73000000000002, 
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.3314470249190071, 
      "n": [
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        0.5825631843499427, 
        3.174073656022523, 
        -10.117473443656856, 
        12.021023952475513, 
        -39.819978547168276
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      "reducing_value": 6058.220000000001, 
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        0.588, 
        3.365, 
        5.022, 
        6.849, 
        16.221
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      "type": "rhoLnoexp", 
      "using_tau_r": false
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      "T_r": 369.295, 
      "Tmax": 369.2949999999993, 
      "Tmin": 115.73000000000002, 
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.6907353964608065, 
      "n": [
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        -1.332183889152018, 
        -2.5626654031276335, 
        -5.6750215901718954, 
        0.6059879695747222, 
        3.499235901423112
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      "reducing_value": 6058.220000000001, 
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        4.839, 
        7.214, 
        11.11
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      "type": "rhoV", 
      "using_tau_r": true
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        3.462158342815594, 
        -0.022355773437643323, 
        0.00010187313921197813, 
        -3.1635225765977416e-07, 
        6.299115847668061e-10, 
        -7.253278756017329e-13, 
        3.643150044447599e-16
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      "B": [
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        -0.0026604613500051714
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      "Tmax": 369.195, 
      "Tmin": 115.78069806980699, 
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", 
      "max_abs_error": 0.8420345957661883, 
      "max_abs_error_units": "J/mol/K", 
      "type": "rational_polynomial"
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        -20.350375820965425, 
        0.18597468829028563, 
        -0.0010274725676266167, 
        3.5553872767248907e-06, 
        -7.551168482973773e-09, 
        9.011861778384509e-12, 
        -4.625458080751607e-15
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      "B": [
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        -0.0026482483141540255
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      "Tmax": 369.195, 
      "Tmin": 115.78069806980699, 
      "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", 
      "max_abs_error": 2.1747460996629213, 
      "max_abs_error_units": "J/mol/K", 
      "type": "rational_polynomial"
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    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012", 
      "Tc": 369.295, 
      "a": [
        3.0587, 
        -2.99856
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
      "n": [
        1.41809, 
        1.42291
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  }, 
  "CAS": "75-45-6", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "A1", 
    "FH": 1, 
    "GWP100": 1810.0, 
    "GWP20": 5160.0, 
    "GWP500": 549.0, 
    "HH": 1, 
    "Name": "R22", 
    "ODP": 0.05, 
    "PH": 0
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  "EOS": [
    {
      "BibTeX_CP0": "", 
      "BibTeX_EOS": "Kamei-IJT-1995", 
      "STATES": {
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          "T": 406.22450000000003, 
          "T_units": "K", 
          "hmolar": 35750.23312835588, 
          "hmolar_units": "J/mol", 
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          "rhomolar": 5452.398000000001, 
          "rhomolar_units": "mol/m^3", 
          "smolar": 138.02512323622946, 
          "smolar_units": "J/mol/K"
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        "reducing": {
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          "hmolar": 31727.891687101688, 
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          "p": 4990000, 
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          "rhomolar": 6058.220000000001, 
          "rhomolar_units": "mol/m^3", 
          "smolar": 129.0763411176551, 
          "smolar_units": "J/mol/K"
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        "sat_min_liquid": {
          "T": 115.73, 
          "T_units": "K", 
          "hmolar": 2559.4875614060247, 
          "hmolar_units": "J/mol", 
          "p": 0.37936328456056284, 
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          "rhomolar": 19906.534060848982, 
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          "smolar": 6.581294309972051, 
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        "sat_min_vapor": {
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          "hmolar": 28768.747001737593, 
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          "p": 0.37946967329532866, 
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          "rhomolar": 0.00039436211244907326, 
          "rhomolar_units": "mol/m^3", 
          "smolar": 233.050312200087, 
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      }, 
      "T_max": 550, 
      "T_max_units": "K", 
      "Ttriple": 115.73, 
      "Ttriple_units": "K", 
      "accentric": 0.22082, 
      "accentric_units": "-", 
      "alpha0": [
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          "a2": 11.68367319965483, 
          "type": "IdealGasHelmholtzLead"
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        {
          "a": -1, 
          "type": "IdealGasHelmholtzLogTau"
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        {
          "T0": 273.15, 
          "Tc": 369.295, 
          "cp_over_R": 4.00526140446, 
          "type": "IdealGasHelmholtzCP0Constant"
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        {
          "T0": 273.15, 
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          "c": [
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          "t": [
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          "type": "IdealGasHelmholtzCP0PolyT"
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        {
          "n": [
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            1, 
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          "t": [
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            5.111575732138263, 
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          "type": "IdealGasHelmholtzPlanckEinstein"
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        {
          "a1": 1.17703822802506, 
          "a2": -0.622087185111783, 
          "reference": "IIR", 
          "type": "IdealGasHelmholtzEnthalpyEntropyOffset"
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      "alphar": [
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            1, 
            1, 
            2, 
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            2, 
            3, 
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            6, 
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            8, 
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            2, 
            2, 
            2, 
            2, 
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            4, 
            4, 
            4, 
            4, 
            6, 
            6, 
            6, 
            8, 
            8, 
            8
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          "l": [
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            0, 
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            2, 
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            3, 
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            2, 
            2, 
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            2, 
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          "n": [
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            8.76009723338e-06, 
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            -7.05323356879e-05, 
            0.23585073151, 
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            0.00375218008557, 
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            0.0198120520635, 
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            0.00567428536529, 
            -0.00563368989908, 
            0.00191384919423, 
            -0.00178930036389
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          "t": [
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            1, 
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            25, 
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            9, 
            19, 
            2, 
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          "type": "ResidualHelmholtzPower"
        }
      ], 
      "critical_region_splines": {
        "T_max": 369.295, 
        "T_min": 369.2949627574784, 
        "_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, 
          -2.3424000852304404e-06, 
          369.3091907750444
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        "cV": [
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          0.0, 
          2.2501789373208953e-06, 
          369.28136792095836
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        "rhomolar_max": 6074.119299984461, 
        "rhomolar_min": 6041.669084436526
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      "gas_constant": 8.31451, 
      "gas_constant_units": "J/mol/K", 
      "molar_mass": 0.086468, 
      "molar_mass_units": "kg/mol", 
      "p_max": 60000000, 
      "p_max_units": "Pa", 
      "pseudo_pure": false
    }
  ], 
  "NAME": "R22", 
  "REFPROP_NAME": "R22", 
  "STATES": {
    "critical": {
      "T": 369.295, 
      "T_units": "K", 
      "p": 4990000.0, 
      "p_units": "Pa", 
      "rhomolar": 6058.220000000001, 
      "rhomolar_units": "mol/m^3"
    }, 
    "triple_liquid": {
      "T": 115.73, 
      "T_units": "K", 
      "hmolar": 2559.4875614060247, 
      "hmolar_units": "J/mol", 
      "p": 0.37936328456056284, 
      "p_units": "Pa", 
      "rhomolar": 19906.534060848982, 
      "rhomolar_units": "mol/m^3", 
      "smolar": 6.581294309972051, 
      "smolar_units": "J/mol/K"
    }, 
    "triple_vapor": {
      "T": 115.73, 
      "T_units": "K", 
      "hmolar": 28768.747001737593, 
      "hmolar_units": "J/mol", 
      "p": 0.37946967329532866, 
      "p_units": "Pa", 
      "rhomolar": 0.00039436211244907326, 
      "rhomolar_units": "mol/m^3", 
      "smolar": 233.050312200087, 
      "smolar_units": "J/mol/K"
    }
  }, 
  "TRANSPORT": {
    "conductivity": {
      "BibTeX": "McLinden-IJR-2000", 
      "f_int": {
        "T_reducing": 1.0, 
        "T_reducing_units": "K", 
        "a": [
          0.00077817, 
          1.2536e-06
        ], 
        "t": [
          0, 
          1
        ]
      }, 
      "psi": {
        "a": [
          1.075, 
          -0.038574
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        "rhomolar_reducing": 6058.220000000001, 
        "rhomolar_reducing_units": "mol/m^3", 
        "t": [
          0, 
          1
        ]
      }, 
      "q_D": 1999999999.9999998, 
      "q_D_units": "m", 
      "reference_fluid": "R134a", 
      "type": "ECS"
    }, 
    "viscosity": {
      "BibTeX": "Klein-IJR-1997", 
      "epsilon_over_k": 284.72, 
      "epsilon_over_k_units": "K", 
      "psi": {
        "a": [
          1.106, 
          -0.0491
        ], 
        "rhomolar_reducing": 6058.220000000001, 
        "rhomolar_reducing_units": "mol/m^3", 
        "t": [
          0, 
          1
        ]
      }, 
      "reference_fluid": "R134a", 
      "sigma_eta": 4.666e-10, 
      "sigma_eta_units": "m", 
      "type": "ECS"
    }
  }
}