{
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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": 2.3864807675861357,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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      "Tmax": 38.24,
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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": 5.161339191960337,
      "max_abs_error_units": "J/mol",
      "type": "rational_polynomial"
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      "using_tau_r": true
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      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))",
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      "type": "rhoLnoexp",
      "using_tau_r": false
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      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))",
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      "Tmax": 38.24,
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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": 0.06072241697857894,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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      "max_abs_error": 0.1336724465372372,
      "max_abs_error_units": "J/mol/K",
      "type": "rational_polynomial"
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    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012",
      "Tc": 38.34,
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)",
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  "EOS": [
    {
      "BibTeX_CP0": "",
      "BibTeX_EOS": "Richardson-JPCRD-2013",
      "STATES": {
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          "hmolar": 1012.7149455649967,
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        "sat_min_liquid": {
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          "hmolar": -122.65703568377039,
          "hmolar_units": "J/mol",
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          "smolar_units": "J/mol/K"
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        "sat_min_vapor": {
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          "hmolar": 1152.7121593388533,
          "hmolar_units": "J/mol",
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          "smolar_units": "J/mol/K"
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      "T_max": 600,
      "T_max_units": "K",
      "Ttriple": 18.724,
      "Ttriple_units": "K",
      "acentric": -0.136290274128,
      "acentric_units": "-",
      "alpha0": [
        {
          "a1": -2.0677351753,
          "a2": 2.4237151502,
          "type": "IdealGasHelmholtzLead"
        },
        {
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          "type": "IdealGasHelmholtzLogTau"
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        {
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        {
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        {
          "beta": [
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          "eta": [
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          "type": "ResidualHelmholtzGaussian"
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      "critical_region_splines": {
        "T_max": 38.34,
        "T_min": 38.3393455081093,
        "_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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        "cV": [
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      "gas_constant": 8.3144621,
      "gas_constant_units": "J/mol/K",
      "molar_mass": 0.0040282,
      "molar_mass_units": "kg/mol",
      "p_max": 2000000000,
      "p_max_units": "Pa",
      "pseudo_pure": false
    }
  ],
  "INFO": {
    "2DPNG_URL": "http://www.chemspider.com/ImagesHandler.ashx?id=22931",
    "ALIASES": [
      "deuterium",
      "DEUTERIUM",
      "D2"
    ],
    "CAS": "7782-39-0",
    "CHEMSPIDER_ID": 22931,
    "ENVIRONMENTAL": {
      "ASHRAE34": "UNKNOWN",
      "FH": -1,
      "GWP100": 0.0,
      "GWP20": 0.0,
      "GWP500": 0.0,
      "HH": -1,
      "Name": "Deuterium",
      "ODP": -1.0,
      "PH": -1
    },
    "FORMULA": "D_{2}",
    "INCHI_KEY": "UFHFLCQGNIYNRP-VVKOMZTBSA-N",
    "INCHI_STRING": "InChI=1S/H2/h1H/i1+1D",
    "NAME": "Deuterium",
    "REFPROP_NAME": "D2",
    "SMILES": "[2H][2H]"
  },
  "STATES": {
    "critical": {
      "T": 38.34,
      "T_units": "K",
      "hmolar": 839.8071401542587,
      "hmolar_units": "J/mol",
      "p": 1679600.0,
      "p_units": "Pa",
      "rhomolar": 17230.0,
      "rhomolar_units": "mol/m^3",
      "smolar": 23.891562920137964,
      "smolar_units": "J/mol/K"
    },
    "triple_liquid": {
      "T": 18.724,
      "T_units": "K",
      "hmolar": -122.65703568377039,
      "hmolar_units": "J/mol",
      "p": 17189.101973451077,
      "p_units": "Pa",
      "rhomolar": 43350.92089035647,
      "rhomolar_units": "mol/m^3",
      "smolar": -5.700748152169429,
      "smolar_units": "J/mol/K"
    },
    "triple_vapor": {
      "T": 18.724,
      "T_units": "K",
      "hmolar": 1152.7121593388533,
      "hmolar_units": "J/mol",
      "p": 17189.102173299063,
      "p_units": "Pa",
      "rhomolar": 112.95640476733868,
      "rhomolar_units": "mol/m^3",
      "smolar": 62.41339376470909,
      "smolar_units": "J/mol/K"
    }
  }
}