{
  "ALIASES": [
    "propyne", 
    "PROPYNE"
  ], 
  "ANCILLARIES": {
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        -0.00010177545026901135, 
        9.5566285295213e-08, 
        -3.8440912085804694e-11
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      "B": [
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        -0.0024710820991143126
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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": 23.11637136310037, 
      "max_abs_error_units": "J/mol", 
      "type": "rational_polynomial"
    }, 
    "hLV": {
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        -62428650.73953163, 
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        49.08291889850264, 
        -0.13832945734848537, 
        0.00023379423008505822, 
        -2.194202771454447e-07, 
        8.821954927272375e-11
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      "B": [
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        -0.0024703699259819383
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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": 50.10025977928581, 
      "max_abs_error_units": "J/mol", 
      "type": "rational_polynomial"
    }, 
    "pL": {
      "T_r": 402.38, 
      "Tmax": 402.37999999999914, 
      "Tmin": 273.0, 
      "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.012366531953733606, 
      "n": [
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        -6.66393075926699, 
        -0.2170324722957424, 
        13.288458369708717, 
        -24.057488658628785, 
        1855841.7713583934
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      "reducing_value": 5626000.0, 
      "t": [
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        0.959, 
        1.864, 
        4.493, 
        5.159, 
        19.1
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      "type": "pL", 
      "using_tau_r": true
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    "pV": {
      "T_r": 402.38, 
      "Tmax": 402.37999999999914, 
      "Tmin": 273.0, 
      "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.012297710682296348, 
      "n": [
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        -0.03566614580246839, 
        -6.474512126273843, 
        0.4178712360656155, 
        -1.9479103016021955, 
        -342.07305237113997
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      "reducing_value": 5626000.0, 
      "t": [
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        0.628, 
        0.992, 
        1.949, 
        5.259, 
        11.136
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      "type": "pV", 
      "using_tau_r": true
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    "rhoL": {
      "T_r": 402.38, 
      "Tmax": 402.37999999999914, 
      "Tmin": 273.0, 
      "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 1.7690932219500133, 
      "n": [
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        42.124365852994195, 
        -52.6498660929799, 
        148.86365466555566, 
        -17709.824791659536, 
        71543.36247766066
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      "reducing_value": 6113.33, 
      "t": [
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        1.358, 
        3.662, 
        7.586, 
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      "type": "rhoLnoexp", 
      "using_tau_r": false
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    "rhoV": {
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      "Tmax": 402.37999999999914, 
      "Tmin": 273.0, 
      "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", 
      "max_abserror_percentage": 0.6935914353018102, 
      "n": [
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        1779.1130020151943, 
        -1782.2051460501207, 
        4.756104080644848, 
        -2.3713377912727562, 
        59.371736976095974
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      "reducing_value": 6113.33, 
      "t": [
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        0.321, 
        0.498, 
        1.309, 
        7.491
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      "type": "rhoV", 
      "using_tau_r": true
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    "sL": {
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        -1286.816684457048, 
        10.90461482651636, 
        -0.051290583939747815, 
        0.00014466122299768887, 
        -2.4467224876841525e-07, 
        2.2978395914762625e-10, 
        -9.244198409326608e-14
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      "B": [
        1, 
        -0.0024711808277578158
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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": 0.05681951763585502, 
      "max_abs_error_units": "J/mol/K", 
      "type": "rational_polynomial"
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    "sLV": {
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        2968.2508101117655, 
        -25.1369079218804, 
        0.11816723432526686, 
        -0.00033308887018890264, 
        5.630297921171934e-07, 
        -5.284530330584984e-10, 
        2.1247378146415853e-13
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      "B": [
        1, 
        -0.002470479789049751
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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": 0.1230057545397818, 
      "max_abs_error_units": "J/mol/K", 
      "type": "rational_polynomial"
    }, 
    "surface_tension": {
      "BibTeX": "Mulero-JPCRD-2012", 
      "Tc": 402.38, 
      "a": [
        0.05801
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      "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", 
      "n": [
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  }, 
  "CAS": "74-99-7", 
  "ENVIRONMENTAL": {
    "ASHRAE34": "UNKNOWN", 
    "FH": 4, 
    "GWP100": -1.0, 
    "GWP20": -1.0, 
    "GWP500": -1.0, 
    "HH": 1, 
    "Name": "Propyne", 
    "ODP": -1.0, 
    "PH": 1
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  "EOS": [
    {
      "BibTeX_CP0": "Polt-CT-1992", 
      "BibTeX_EOS": "Polt-CT-1992", 
      "STATES": {
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          "hmolar": 1628.31491990704, 
          "hmolar_units": "J/mol", 
          "p": 9149388.83636857, 
          "p_units": "Pa", 
          "rhomolar": 5501.997, 
          "rhomolar_units": "mol/m^3", 
          "smolar": 10.536641025012846, 
          "smolar_units": "J/mol/K"
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        "reducing": {
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          "T_units": "K", 
          "p": 5626000, 
          "p_units": "Pa", 
          "rhomolar": 6113.33, 
          "rhomolar_units": "mol/m^3"
        }, 
        "sat_min_liquid": {
          "T": 273.0, 
          "T_units": "K", 
          "p": 263.5669059887786, 
          "p_units": "Pa", 
          "rhomolar": 16279.0418039543, 
          "rhomolar_units": "mol/m^3"
        }, 
        "sat_min_vapor": {
          "T": 273.0, 
          "T_units": "K", 
          "p": 263.5669059887786, 
          "p_units": "Pa", 
          "rhomolar": 124.13577693070359, 
          "rhomolar_units": "mol/m^3"
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      }, 
      "T_max": 474, 
      "T_max_units": "K", 
      "Ttriple": 170.5, 
      "Ttriple_units": "K", 
      "accentric": 0.204, 
      "accentric_units": "-", 
      "alpha0": [
        {
          "a1": 0, 
          "a2": 0, 
          "type": "IdealGasHelmholtzLead"
        }, 
        {
          "a": -1, 
          "type": "IdealGasHelmholtzLogTau"
        }, 
        {
          "T0": 298.15, 
          "Tc": 402.38, 
          "c": [
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            0.02333952849909193, 
            -1.673911795340558e-05, 
            6.980952359188388e-09, 
            -1.29200161168108e-12
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          "t": [
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            1, 
            2, 
            3, 
            4
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          "type": "IdealGasHelmholtzCP0PolyT"
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        {
          "a1": -11.004154248087, 
          "a2": 8.92674898200796, 
          "reference": "IIR", 
          "type": "IdealGasHelmholtzEnthalpyEntropyOffset"
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      "alphar": [
        {
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            1, 
            2, 
            2, 
            2, 
            3, 
            3, 
            4, 
            4, 
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          "l": [
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          "n": [
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            1.07889905203761
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          "t": [
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            3, 
            4, 
            0, 
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            2, 
            0, 
            1, 
            0, 
            1, 
            1, 
            3, 
            4, 
            5
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          "type": "ResidualHelmholtzPower"
        }, 
        {
          "d": [
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            2, 
            2, 
            0, 
            0, 
            0
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          "g": [
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            1.65533788
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          "l": [
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          "n": [
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          "t": [
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            4, 
            5
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          "type": "ResidualHelmholtzExponential"
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      ], 
      "gas_constant": 8.3143, 
      "gas_constant_units": "J/mol/K", 
      "molar_mass": 0.04006000000000001, 
      "molar_mass_units": "kg/mol", 
      "p_max": 31800000, 
      "p_max_units": "Pa", 
      "pseudo_pure": false
    }
  ], 
  "NAME": "Propyne", 
  "REFPROP_NAME": "PROPYNE", 
  "STATES": {
    "critical": {
      "T": 402.38, 
      "T_units": "K", 
      "p": 5626000.0, 
      "p_units": "Pa", 
      "rhomolar": 6113.33, 
      "rhomolar_units": "mol/m^3"
    }, 
    "triple_liquid": {}, 
    "triple_vapor": {}
  }
}