{ "ALIASES": [ "Octamethylcyclotetrasiloxane", "OCTAMETHYLCYCLOTETRASILOXANE" ], "ANCILLARIES": { "hL": { "A": [ -242733.61736799963, -318.3507781301296, 8.195675509547362, -0.03561089055927343, 8.809500154425245e-05, -1.3151012930441608e-07, 1.0806759530973633e-10, -3.7758893520949364e-14 ], "B": [ 1, -0.0016983601923611878 ], "Tmax": 586.4, "Tmin": 290.25, "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", "max_abs_error": 210.757369400264, "max_abs_error_units": "J/mol", "type": "rational_polynomial" }, "hLV": { "A": [ -139626.50600216805, 3951.0832106916405, -32.30114344526932, 0.13626456759983369, -0.0003368987117567807, 4.92953354078871e-07, -3.967828604903553e-10, 1.3597276935373588e-13 ], "B": [ 1, -0.0016930950179782683 ], "Tmax": 586.4, "Tmin": 290.25, "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", "max_abs_error": 972.2395235013287, "max_abs_error_units": "J/mol", "type": "rational_polynomial" }, "pL": { "T_r": 586.5, "Tmax": 586.4999999999989, "Tmin": 290.25, "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 0.028925946608671094, "n": [ 0.39146787698576685, -22.07223693358694, 15.421699054361437, -4.2709891047524335, -7.542128557150028, 140.7032008919629 ], "reducing_value": 1332000.0, "t": [ 0.893, 1.059, 1.151, 2.074, 4.392, 16.257 ], "type": "pL", "using_tau_r": true }, "pV": { "T_r": 586.5, "Tmax": 586.4999999999989, "Tmin": 290.25, "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 0.028925946446056727, "n": [ 90.36983662049464, -97.70779785443601, -3.62818153879477, -6.09127598868665, -26.32182480105557, 153.97714284240485 ], "reducing_value": 1332000.0, "t": [ 0.87, 0.876, 2.397, 4.259, 10.207, 13.645 ], "type": "pV", "using_tau_r": true }, "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": [ 1.1098694118456651, 3.8256536703025574, -7151.436323591654, 41771953.36308636, -74286753.6277466, 67304077.15677227 ], "reducing_value": 1030.928, "t": [ 0.156, 1.24, 9.435, 16.41, 17.017, 19.509 ], "type": "rhoLnoexp", "using_tau_r": false }, "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": [ 1.4882997310050823, -4.34717643630862, -14.118092236565857, 25.086940017821192, -5022.733213778868, 93552.36171295607 ], "reducing_value": 1030.928, "t": [ 0.114, 0.23, 1.834, 3.647, 11.227, 16.17 ], "type": "rhoV", "using_tau_r": true }, "sL": { "A": [ -1096.1537637502638, 5.182196014073304, -0.009667076971128888, 3.675326860758794e-06, 3.035859315712393e-08, -8.135170807348984e-11, 8.70236609404654e-14, -3.553097675862613e-17 ], "B": [ 1, -0.0016984368849950616 ], "Tmax": 586.4, "Tmin": 290.25, "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", "max_abs_error": 0.3586244390268831, "max_abs_error_units": "J/mol/K", "type": "rational_polynomial" }, "sLV": { "A": [ 1298.0632996042098, -10.437980642775662, 0.03418975225322392, -4.15486712681751e-05, -4.9476236494502396e-08, 2.2084095211494436e-10, -2.627365181599233e-13, 1.1175294680401058e-16 ], "B": [ 1, -0.0016931576442585682 ], "Tmax": 586.4, "Tmin": 290.25, "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", "max_abs_error": 1.6495349638100505, "max_abs_error_units": "J/mol/K", "type": "rational_polynomial" }, "surface_tension": { "BibTeX": "Mulero-JPCRD-2014", "Tc": 586.5, "a": [ 0.04246 ], "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", "n": [ 1.207 ] } }, "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", "STATES": { "hs_anchor": { "T": 645.1403990570001, "T_units": "K", "hmolar": 125575.49724587752, "hmolar_units": "J/mol", "p": 2353169.4942233893, "p_units": "Pa", "rhomolar": 931.6100790000011, "rhomolar_units": "mol/m^3", "smolar": 227.67734367915278, "smolar_units": "J/mol/K" }, "reducing": { "T": 586.49127187, "T_units": "K", "hmolar": 89345.78916363802, "hmolar_units": "J/mol", "p": 1332000, "p_units": "Pa", "rhomolar": 1035.122310000001, "rhomolar_units": "mol/m^3", "smolar": 170.5022172629333, "smolar_units": "J/mol/K" }, "sat_min_liquid": { "T": 290.25, "T_units": "K", "hmolar": -77643.64716249761, "hmolar_units": "J/mol", "p": 69.6092376840441, "p_units": "Pa", "rhomolar": 3200.4450981169975, "rhomolar_units": "mol/m^3", "smolar": -211.68352057551905, "smolar_units": "J/mol/K" }, "sat_min_vapor": { "T": 290.25, "T_units": "K", "hmolar": -21203.046891187223, "hmolar_units": "J/mol", "p": 69.60923766759312, "p_units": "Pa", "rhomolar": 0.028853717844190628, "rhomolar_units": "mol/m^3", "smolar": -17.2283947482962, "smolar_units": "J/mol/K" } }, "T_max": 673, "T_max_units": "K", "Ttriple": 290.25, "Ttriple_units": "K", "accentric": 0.592, "accentric_units": "-", "alpha0": [ { "a1": 29.18574340067077, "a2": -14.02099419676275, "type": "IdealGasHelmholtzLead" }, { "a": -1, "type": "IdealGasHelmholtzLogTau" }, { "T0": 448.503917912145, "Tc": 586.49127187, "cp_over_R": -2.19568963609475, "type": "IdealGasHelmholtzCP0Constant" }, { "T0": 448.503917912145, "Tc": 586.49127187, "c": [ 0.171652511428266, -0.000119093551580906, 3.60816657991031e-08 ], "t": [ 1, 2, 3 ], "type": "IdealGasHelmholtzCP0PolyT" }, { "a1": -36.9617168387456, "a2": 22.2512527290327, "reference": "NBP", "type": "IdealGasHelmholtzEnthalpyEntropyOffset" } ], "alphar": [ { "d": [ 1, 1, 1, 2, 3, 7, 2, 5, 1, 4, 3, 4 ], "l": [ 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3 ], "n": [ 1.05392408, -2.22981918, 0.77573923, -0.6937405, 0.18721557, 0.0004219333, 0.70301835, 0.047851888, -0.8025348, -0.18968872, -0.022211781, 0.0060103354 ], "t": [ 0.25, 1.125, 1.5, 1.375, 0.25, 0.875, 0.625, 1.75, 3.625, 3.625, 14.5, 12 ], "type": "ResidualHelmholtzPower" } ], "critical_region_splines": { "T_max": 586.5, "T_min": 583.1872205036263, "_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": [ 0.0, -1.667552305553379e-05, 0.034382527265190706, 568.7770449657756 ], "cV": [ 6.813459579816792e-08, -0.00021263235123370055, 0.22117438047692597, 509.81953537332856 ], "rhomolar_max": 1476.6422633230486, "rhomolar_min": 675.0371135400856 }, "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 } ], "NAME": "D4", "REFPROP_NAME": "D4", "STATES": { "critical": { "T": 586.5, "T_units": "K", "p": 1332000.0, "p_units": "Pa", "rhomolar": 1030.928, "rhomolar_units": "mol/m^3" }, "triple_liquid": { "T": 290.25, "T_units": "K", "hmolar": -77643.64716249761, "hmolar_units": "J/mol", "p": 69.6092376840441, "p_units": "Pa", "rhomolar": 3200.4450981169975, "rhomolar_units": "mol/m^3", "smolar": -211.68352057551905, "smolar_units": "J/mol/K" }, "triple_vapor": { "T": 290.25, "T_units": "K", "hmolar": -21203.046891187223, "hmolar_units": "J/mol", "p": 69.60923766759312, "p_units": "Pa", "rhomolar": 0.028853717844190628, "rhomolar_units": "mol/m^3", "smolar": -17.2283947482962, "smolar_units": "J/mol/K" } } }