{
  "ALIASES": [
    "hydrogen", 
    "HYDROGEN", 
    "H2", 
    "R702"
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      "Tmax": 33.144999999999925, 
      "Tmin": 13.957000000000011, 
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.01630156085371537, 
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      "type": "pL", 
      "using_tau_r": true
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      "Tmax": 33.144999999999925, 
      "Tmin": 13.957000000000011, 
      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.006522036925715735, 
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      "Tmax": 33.144999999999925, 
      "Tmin": 13.957000000000011, 
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.8323321588331933, 
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        714.2366728890577, 
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      "reducing_value": 15508.0, 
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      "type": "rhoLnoexp", 
      "using_tau_r": false
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    "rhoV": {
      "T_r": 33.145, 
      "Tmax": 33.144999999999925, 
      "Tmin": 13.957000000000011, 
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.5551328985772819, 
      "n": [
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      "reducing_value": 15508.0, 
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      "type": "rhoV", 
      "using_tau_r": true
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    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012", 
      "Tc": 33.145, 
      "a": [
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
      "n": [
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  }, 
  "CAS": "1333-74-0", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "A3", 
    "FH": 4, 
    "GWP100": -1.0, 
    "GWP20": -1.0, 
    "GWP500": -1.0, 
    "HH": 0, 
    "Name": "Hydrogen", 
    "ODP": -1.0, 
    "PH": 0
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  "EOS": [
    {
      "BibTeX_CP0": "", 
      "BibTeX_EOS": "Leachman-JPCRD-2009", 
      "T_max": 1000, 
      "T_max_units": "K", 
      "Ttriple": 13.957, 
      "Ttriple_units": "K", 
      "accentric": -0.219, 
      "accentric_units": "-", 
      "alpha0": [
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        {
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        {
          "n": [
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          "type": "ResidualHelmholtzPower"
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        {
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          "epsilon": [
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          "eta": [
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          "type": "ResidualHelmholtzGaussian"
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      "gas_constant": 8.314472, 
      "gas_constant_units": "J/mol/K", 
      "molar_mass": 0.00201588, 
      "molar_mass_units": "kg/mol", 
      "p_max": 2000000000, 
      "p_max_units": "Pa", 
      "pseudo_pure": false, 
      "ptriple": 7357.828142, 
      "ptriple_units": "Pa", 
      "reducing_state": {
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        "T_units": "K", 
        "p": 1296400, 
        "p_units": "Pa", 
        "rhomolar": 15508, 
        "rhomolar_units": "mol/m^3"
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      "rhoLtriple": 38198.13818258921, 
      "rhoLtriple_units": "mol/m^3", 
      "rhoVtriple": 64.44810198985165, 
      "rhoVtriple_units": "mol/m^3"
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  ], 
  "NAME": "Hydrogen"
}