{
  "ALIASES": [
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    "ISOBUTENE"
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  "ANCILLARIES": {
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      "Tmax": 418.08999999999907, 
      "Tmin": 132.4, 
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.14739891561160734, 
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        8.384924413254762, 
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        18.914
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      "type": "pL", 
      "using_tau_r": true
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      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.14741018682782325, 
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      "type": "pV", 
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      "Tmax": 418.08999999999907, 
      "Tmin": 132.4, 
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.6248238395114569, 
      "n": [
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      "reducing_value": 4170.0, 
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      "type": "rhoLnoexp", 
      "using_tau_r": false
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      "Tmax": 418.08999999999907, 
      "Tmin": 132.4, 
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.35084693470349704, 
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      "reducing_value": 4170.0, 
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      "type": "rhoV", 
      "using_tau_r": true
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    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012", 
      "Tc": 418.09, 
      "a": [
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
      "n": [
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  }, 
  "CAS": "115-11-7", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "UNKNOWN", 
    "FH": 4, 
    "GWP100": -1.0, 
    "GWP20": -1.0, 
    "GWP500": -1.0, 
    "HH": 1, 
    "Name": "Isobutene", 
    "ODP": -1.0, 
    "PH": 2
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  "EOS": [
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      "BibTeX_CP0": "", 
      "BibTeX_EOS": "Lemmon-FPE-2005", 
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      "T_max_units": "K", 
      "Ttriple": 132.4, 
      "Ttriple_units": "K", 
      "accentric": 0.1925934521621, 
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          "l": [
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          "type": "ResidualHelmholtzPower"
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      "gas_constant_units": "J/mol/K", 
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      "molar_mass_units": "kg/mol", 
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      "p_max_units": "Pa", 
      "pseudo_pure": false, 
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      "ptriple_units": "Pa", 
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        "rhomolar": 4170, 
        "rhomolar_units": "mol/m^3"
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  "NAME": "IsoButene"
}