{
  "ALIASES": [
    "Octamethylcyclotetrasiloxane", 
    "OCTAMETHYLCYCLOTETRASILOXANE"
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  "ANCILLARIES": {
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      "Tmax": 586.4999999999989, 
      "Tmin": 290.25, 
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.028925946608671094, 
      "n": [
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        -22.07223693358694, 
        15.421699054361437, 
        -4.2709891047524335, 
        -7.542128557150028, 
        140.7032008919629
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      "reducing_value": 1332000.0, 
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        1.151, 
        2.074, 
        4.392, 
        16.257
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      "type": "pL", 
      "using_tau_r": true
    }, 
    "pV": {
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      "Tmax": 586.4999999999989, 
      "Tmin": 290.25, 
      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.028925946446056727, 
      "n": [
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        -97.70779785443601, 
        -3.62818153879477, 
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        -26.32182480105557, 
        153.97714284240485
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      "reducing_value": 1332000.0, 
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        4.259, 
        10.207, 
        13.645
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      "type": "pV", 
      "using_tau_r": true
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    "rhoL": {
      "T_r": 586.5, 
      "Tmax": 586.4999999999989, 
      "Tmin": 290.25, 
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 13.286210237431817, 
      "n": [
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        3.8256536703025574, 
        -7151.436323591654, 
        41771953.36308636, 
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        67304077.15677227
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      "reducing_value": 1030.928, 
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        17.017, 
        19.509
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      "type": "rhoLnoexp", 
      "using_tau_r": false
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    "rhoV": {
      "T_r": 586.5, 
      "Tmax": 586.4999999999989, 
      "Tmin": 290.25, 
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 9.473643686906497, 
      "n": [
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        -4.34717643630862, 
        -14.118092236565857, 
        25.086940017821192, 
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      "reducing_value": 1030.928, 
      "t": [
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        16.17
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      "type": "rhoV", 
      "using_tau_r": true
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  }, 
  "CAS": "556-67-2", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "UNKNOWN", 
    "FH": -1, 
    "GWP100": -1.0, 
    "GWP20": -1.0, 
    "GWP500": -1.0, 
    "HH": -1, 
    "Name": "D4", 
    "ODP": -1.0, 
    "PH": -1
  }, 
  "EOS": [
    {
      "BibTeX_CP0": "", 
      "BibTeX_EOS": "Colonna-FPE-2006", 
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      "T_max_units": "K", 
      "Ttriple": 290.25, 
      "Ttriple_units": "K", 
      "accentric": 0.592, 
      "accentric_units": "-", 
      "alpha0": [
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        }, 
        {
          "a": -1, 
          "type": "IdealGasHelmholtzLogTau"
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        {
          "T0": 448.503917912145, 
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          "cp_over_R": -2.19568963609475, 
          "type": "IdealGasHelmholtzCP0Constant"
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        {
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          "t": [
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            3
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          "type": "IdealGasHelmholtzCP0PolyT"
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      "alphar": [
        {
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            1, 
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            7, 
            2, 
            5, 
            1, 
            4, 
            3, 
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          "l": [
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            2, 
            3, 
            3
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          "n": [
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          "type": "ResidualHelmholtzPower"
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      "gas_constant": 8.314472, 
      "gas_constant_units": "J/mol/K", 
      "molar_mass": 0.29661576, 
      "molar_mass_units": "kg/mol", 
      "p_max": 30000000, 
      "p_max_units": "Pa", 
      "pseudo_pure": false, 
      "ptriple": 69.60923767, 
      "ptriple_units": "Pa", 
      "reducing_state": {
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        "T_units": "K", 
        "p": 1332000, 
        "p_units": "Pa", 
        "rhomolar": 1035.122310000001, 
        "rhomolar_units": "mol/m^3"
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      "rhoLtriple": 3200.441443603881, 
      "rhoLtriple_units": "mol/m^3", 
      "rhoVtriple": 0.02885594486307443, 
      "rhoVtriple_units": "mol/m^3"
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  "NAME": "D4"
}