{ "ALIASES": [ "nPentane", "Pentane", "PENTANE", "N-PENTANE", "R601" ], "ANCILLARIES": { "hL": { "A": [ -91756.76234006461, 280.58777538383487, 0.49685910535106487, -0.005748108050935333, 2.330377041868759e-05, -5.232598817569962e-08, 6.142566392916227e-11, -3.0080059554031395e-14 ], "B": [ 1, -0.0021084032742589094 ], "Tmax": 469.6, "Tmin": 143.47, "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", "max_abs_error": 412.74441656838644, "max_abs_error_units": "J/mol", "type": "rational_polynomial" }, "hLV": { "A": [ 42880.50966779205, -89.8594742876895, -1.0875408200167276, 0.009903938566591382, -4.129942050678408e-05, 9.454236859411337e-08, -1.1494304982937444e-10, 5.86920443533605e-14 ], "B": [ 1, -0.002104268667562365 ], "Tmax": 469.6, "Tmin": 143.47, "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", "max_abs_error": 967.4624259796101, "max_abs_error_units": "J/mol", "type": "rational_polynomial" }, "melting_line": { "BibTeX": "Reeves-JCP-1964", "T_m": 143.26, "_note": "Modified coefficients to make minimum state agree with triple point", "parts": [ { "T_0": 143.47, "T_max": 156.2, "T_min": 143.47, "a": 660000000.0, "c": 1.649, "p_0": 0.07632208287718079 } ], "type": "Simon" }, "pL": { "T_r": 469.7, "Tmax": 469.69999999999914, "Tmin": 143.47, "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 0.03728114510677116, "n": [ 0.04748174519828376, -6.629115738167101, 0.6562557112100337, -2.28440361956112, -1.308924059672944, -1.1435668798949066 ], "reducing_value": 3370000.0, "t": [ 0.642, 0.976, 1.848, 3.17, 3.871, 7.841 ], "type": "pL", "using_tau_r": true }, "pV": { "T_r": 469.7, "Tmax": 469.69999999999914, "Tmin": 143.47, "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 0.029330284037554222, "n": [ 0.0002920351277984843, -468.97717292372954, 465.7564333009324, -3.372619624545633, -3.4063439897011767, -1.5154480392091865 ], "reducing_value": 3370000.0, "t": [ 0.137, 1.119, 1.123, 1.477, 3.969, 12.951 ], "type": "pV", "using_tau_r": true }, "rhoL": { "T_r": 469.7, "Tmax": 469.69999999999914, "Tmin": 143.47, "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", "max_abserror_percentage": 3.114298806470317, "n": [ 2.3841375525242356, 0.19925431521697065, 5225.0215429825175, 38711.30119718553, -196165.0631164374, 157517.76191925188 ], "reducing_value": 3215.5775884221466, "t": [ 0.389, 1.069, 18.567, 18.567, 19.512, 19.95 ], "type": "rhoLnoexp", "using_tau_r": false }, "rhoV": { "T_r": 469.7, "Tmax": 469.69999999999914, "Tmin": 143.47, "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 3.2828728664463958, "n": [ -4.317782477894743, -2.2050235507345954, -2.7959424348848843, -5.048155874145048, 472.4781512909357, -547.9642656628733 ], "reducing_value": 3215.5775884221466, "t": [ 0.482, 1.994, 4.101, 9.312, 18.36, 19.107 ], "type": "rhoV", "using_tau_r": true }, "sL": { "A": [ -504.6730674318999, 4.585323478859553, -0.02479934082458695, 9.377365981972263e-05, -2.3110401991935404e-07, 3.49937287143199e-10, -2.9714690679827825e-13, 1.0780113096970239e-16 ], "B": [ 1, -0.002103387703665542 ], "Tmax": 469.6, "Tmin": 143.47, "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", "max_abs_error": 0.9830629680041199, "max_abs_error_units": "J/mol/K", "type": "rational_polynomial" }, "sLV": { "A": [ 1247.4338143422697, -18.877257550344826, 0.14210131651643207, -0.0006414980040085949, 1.8005883712780147e-06, -3.0825849805126652e-09, 2.9499509145058343e-12, -1.2092852449965521e-15 ], "B": [ 1, -0.002077110705576737 ], "Tmax": 469.6, "Tmin": 143.47, "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", "max_abs_error": 2.826225210152348, "max_abs_error_units": "J/mol/K", "type": "rational_polynomial" }, "surface_tension": { "BibTeX": "Mulero-JPCRD-2012", "Tc": 469.7, "a": [ 0.08015, 0.004384, -0.03437 ], "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", "n": [ 1.408, 1.031, 1.818 ] } }, "CAS": "109-66-0", "ENVIRONMENTAL": { "ASHRAE34": "UNKNOWN", "FH": 4, "GWP100": -1.0, "GWP20": -1.0, "GWP500": -1.0, "HH": 2, "Name": "n-Pentane", "ODP": -1.0, "PH": 0 }, "EOS": [ { "BibTeX_CP0": "Jaeschke-IJT-1995", "BibTeX_EOS": "Span-IJT-2003B", "STATES": { "hs_anchor": { "T": 516.6700000000001, "T_units": "K", "hmolar": 48110.14828842092, "hmolar_units": "J/mol", "p": 5578204.572176031, "p_units": "Pa", "rhomolar": 2894.0198295799323, "rhomolar_units": "mol/m^3", "smolar": 113.50504419519663, "smolar_units": "J/mol/K" }, "reducing": { "T": 469.7, "T_units": "K", "hmolar": 37561.10567308114, "hmolar_units": "J/mol", "p": 3370000, "p_units": "Pa", "rhomolar": 3215.577588422147, "rhomolar_units": "mol/m^3", "smolar": 93.56559800555729, "smolar_units": "J/mol/K" }, "sat_min_liquid": { "T": 143.47, "T_units": "K", "hmolar": -25091.537148819258, "hmolar_units": "J/mol", "p": 0.07632208287718079, "p_units": "Pa", "rhomolar": 10566.403034046356, "rhomolar_units": "mol/m^3", "smolar": -114.87359084322038, "smolar_units": "J/mol/K" }, "sat_min_vapor": { "T": 143.47, "T_units": "K", "hmolar": 9535.953964461274, "hmolar_units": "J/mol", "p": 0.0763221952171699, "p_units": "Pa", "rhomolar": 6.398134604459582e-05, "rhomolar_units": "mol/m^3", "smolar": 126.48342412292618, "smolar_units": "J/mol/K" } }, "T_max": 573, "T_max_units": "K", "Ttriple": 143.47, "Ttriple_units": "K", "accentric": 0.251, "accentric_units": "-", "alpha0": [ { "a1": -1.548185641277708, "a2": 0, "type": "IdealGasHelmholtzLead" }, { "a": -1, "type": "IdealGasHelmholtzLogTau" }, { "T0": 298, "Tc": 469.7, "c": [ 4, 8.95043, 178.67, 21.836, 840.538 ], "type": "IdealGasHelmholtzCP0AlyLee" }, { "T0": 298, "Tc": 469.7, "c": [ 0, 33.4032, 1774.25, 0, 0 ], "type": "IdealGasHelmholtzCP0AlyLee" }, { "a1": 4.12081292405308, "a2": 3.14199957169349, "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": [ 1.0968643, -2.9988888, 0.99516887, -0.16170709, 0.1133446, 0.00026760595, 0.40979882, -0.040876423, -0.38169482, -0.10931957, -0.032073223, 0.016877016 ], "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": 469.70000000000005, "T_min": 469.36685791273345, "_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": [ -1.1076982598336214e-09, 1.0116271697455407e-05, -0.03069871503131287, 500.6421885129799 ], "cV": [ 4.3055773822385574e-10, -5.541145426556296e-06, 0.022280143554586573, 441.03601546584997 ], "rhomolar_max": 3750.9260751689894, "rhomolar_min": 2757.127555479338 }, "gas_constant": 8.31451, "gas_constant_units": "J/mol/K", "molar_mass": 0.07214878, "molar_mass_units": "kg/mol", "p_max": 69000000, "p_max_units": "Pa", "pseudo_pure": false } ], "NAME": "n-Pentane", "REFPROP_NAME": "PENTANE", "STATES": { "critical": { "T": 469.7, "T_units": "K", "p": 3370000.0, "p_units": "Pa", "rhomolar": 3215.5775884221466, "rhomolar_units": "mol/m^3" }, "triple_liquid": { "T": 143.47, "T_units": "K", "hmolar": -25091.537148819258, "hmolar_units": "J/mol", "p": 0.07632208287718079, "p_units": "Pa", "rhomolar": 10566.403034046356, "rhomolar_units": "mol/m^3", "smolar": -114.87359084322038, "smolar_units": "J/mol/K" }, "triple_vapor": { "T": 143.47, "T_units": "K", "hmolar": 9535.953964461274, "hmolar_units": "J/mol", "p": 0.0763221952171699, "p_units": "Pa", "rhomolar": 6.398134604459582e-05, "rhomolar_units": "mol/m^3", "smolar": 126.48342412292618, "smolar_units": "J/mol/K" } } }