{ "ALIASES": [ "Octamethyltrisiloxane", "OCTAMETHYLTRISILOXANE" ], "ANCILLARIES": { "hL": { "A": [ -335980.0509583226, 1559.9089852507134, -4.6774598727892895, 0.01231364299170359, -1.9063744638600872e-05, 1.165607116987723e-08, 2.7488145513980003e-12, -4.966631046951038e-15 ], "B": [ 1, -0.001752798218931474 ], "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", "max_abs_error": 475.99845007405384, "max_abs_error_units": "J/mol", "type": "rational_polynomial" }, "hLV": { "A": [ 108664.29794706579, -548.8054555731605, 1.1251590287839908, 0.0007631887616178479, -1.1579843714558503e-05, 3.00888503315381e-08, -3.5505554575989637e-11, 1.6717973202570127e-14 ], "B": [ 1, -0.0017486535371820974 ], "_note": "coefficients are in increasing order; input in K, output in J/mol; value is enthalpy minus hs_anchor enthalpy", "max_abs_error": 1238.1363045077333, "max_abs_error_units": "J/mol", "type": "rational_polynomial" }, "pL": { "T_r": 564.09, "Tmax": 564.0899999999991, "Tmin": 187.2, "description": "p' = pc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 0.04186314366612098, "n": [ 7.151644754758889, -14.810015370529984, -15.36961787983751, 8.076060116129836, -3.6452117116809757, -5.057768713626933 ], "reducing_value": 1415000.0, "t": [ 0.935, 0.957, 3.712, 3.946, 8.929, 15.706 ], "type": "pL", "using_tau_r": true }, "pV": { "T_r": 564.09, "Tmax": 564.0899999999991, "Tmin": 187.2, "description": "p'' = pc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 0.024851468537323562, "n": [ -7.936889046270078, 0.4885306005155446, -67.10334672914131, 81.16754242307255, -22.935610159360184, -8.42878077834636 ], "reducing_value": 1415000.0, "t": [ 0.987, 1.546, 3.846, 4.039, 4.551, 13.863 ], "type": "pV", "using_tau_r": true }, "rhoL": { "T_r": 564.09, "Tmax": 564.0899999999991, "Tmin": 187.2, "description": "rho' = rhoc*(1+sum(n_i*theta^t_i))", "max_abserror_percentage": 2.071265696090907, "n": [ 1.45291315657308, 2.312272976677222, -4.874255044402854, 307.6934209444335, -1382.6177281292519, 4631.49982640604 ], "reducing_value": 1085.436621399999, "t": [ 0.223, 0.968, 3.92, 10.353, 13.555, 19.388 ], "type": "rhoLnoexp", "using_tau_r": false }, "rhoV": { "T_r": 564.09, "Tmax": 564.0899999999991, "Tmin": 187.2, "description": "rho'' = rhoc*exp(Tc/T*sum(n_i*theta^t_i))", "max_abserror_percentage": 1.1286811681511688, "n": [ -4.654136197604254, 2.746428492946218, -4.932262158034249, -13.972748625767835, 41.66694309398031, -76.16608993524603 ], "reducing_value": 1085.436621399999, "t": [ 0.361, 0.403, 0.889, 4.368, 9.333, 12.182 ], "type": "rhoV", "using_tau_r": true }, "sL": { "A": [ -1682.1690990559187, 15.850194573572765, -0.08685815446669973, 0.0003111541834164603, -7.047220355224611e-07, 9.71763022349277e-10, -7.48409313494018e-13, 2.471544620951495e-16 ], "B": [ 1, -0.0017289265757144895 ], "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", "max_abs_error": 1.1920403388149055, "max_abs_error_units": "J/mol/K", "type": "rational_polynomial" }, "sLV": { "A": [ 2160.9582170309986, -27.793807048990015, 0.1737083621762945, -0.000645492687399277, 1.4891139597323978e-06, -2.09617401746936e-09, 1.6508736839738546e-12, -5.576069892633767e-16 ], "B": [ 1, -0.0017218557732542235 ], "_note": "coefficients are in increasing order; input in K, output in J/mol/K; value is entropy minus hs_anchor entropy", "max_abs_error": 2.9726748890934687, "max_abs_error_units": "J/mol/K", "type": "rational_polynomial" }, "surface_tension": { "BibTeX": "Mulero-JPCRD-2014", "Tc": 564.09, "a": [ 0.04992 ], "description": "sigma = sum(a_i*(1-T/Tc)^n_i)", "n": [ 1.465 ] } }, "CAS": "107-51-7", "ENVIRONMENTAL": { "ASHRAE34": "UNKNOWN", "FH": 2, "GWP100": -1.0, "GWP20": -1.0, "GWP500": -1.0, "HH": 1, "Name": "MDM", "ODP": -1.0, "PH": 0 }, "EOS": [ { "BibTeX_CP0": "", "BibTeX_EOS": "Colonna-FPE-2008", "STATES": { "hs_anchor": { "T": 620.4990000000001, "T_units": "K", "hmolar": 114152.7267307504, "hmolar_units": "J/mol", "p": 2455964.0849335417, "p_units": "Pa", "rhomolar": 976.8929592599991, "rhomolar_units": "mol/m^3", "smolar": 216.23188872366197, "smolar_units": "J/mol/K" }, "reducing": { "T": 564.09, "T_units": "K", "p": 1415000, "p_units": "Pa", "rhomolar": 1085.436621399999, "rhomolar_units": "mol/m^3" }, "sat_min_liquid": { "T": 187.2, "T_units": "K", "p": 7.991110509185762e-07, "p_units": "Pa", "rhomolar": 3930.8232636425755, "rhomolar_units": "mol/m^3" }, "sat_min_vapor": { "T": 187.2, "T_units": "K", "p": 7.991110509185762e-07, "p_units": "Pa", "rhomolar": 5.134127178430179e-07, "rhomolar_units": "mol/m^3" } }, "T_max": 673, "T_max_units": "K", "Ttriple": 187.2, "Ttriple_units": "K", "accentric": 0.5297, "accentric_units": "-", "alpha0": [ { "a1": -7.468857958439935, "a2": 7.890869311590564, "type": "IdealGasHelmholtzLead" }, { "a": -1, "type": "IdealGasHelmholtzLogTau" }, { "T0": 425.676967, "Tc": 564.09, "c": [ 33.08688753777751, 73.71484322756754, 1829.6, 49.67242658343187, 802.6 ], "type": "IdealGasHelmholtzCP0AlyLee" }, { "a1": 5.47852885342047, "a2": -3.27047097040424, "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": [ 1.19735372, -2.40380622, 0.3256564, -0.19971259, 0.11206277, 0.00015893999, 0.51234323, -0.020660361, -0.38978114, -0.1186931, -0.037203537, 0.018359984 ], "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" } ], "gas_constant": 8.314472, "gas_constant_units": "J/mol/K", "molar_mass": 0.23653146, "molar_mass_units": "kg/mol", "p_max": 30000000, "p_max_units": "Pa", "pseudo_pure": false } ], "NAME": "MDM", "REFPROP_NAME": "MDM", "STATES": { "critical": { "T": 564.09, "T_units": "K", "p": 1415000.0, "p_units": "Pa", "rhomolar": 1085.436621399999, "rhomolar_units": "mol/m^3" }, "triple_liquid": { "T": 187.2, "T_units": "K", "p": 7.991110509185762e-07, "p_units": "Pa", "rhomolar": 3930.8232636425755, "rhomolar_units": "mol/m^3" }, "triple_vapor": { "T": 187.2, "T_units": "K", "p": 7.991110509185762e-07, "p_units": "Pa", "rhomolar": 5.134127178430179e-07, "rhomolar_units": "mol/m^3" } } }