The (p, rho, T, x) properties for binary mixtures of CO2 (volume fraction purity 0.99999) and n-butane (mole fraction purity 0.9997) {x1 CO2 + x2 n-butane (x1 = 0.2322, 0.4794, and 0.7150)} were measured in the compressed liquid phase using a metal-bellows variable volumometer. Measurements were conducted from T = (280 to 440) K and (3 to 200) MPa. The expanded uncertainties (k = 2) were estimated to be: temperature, 3 mK; pressure, 1.5 kPa (p less than or equal to 7 MPa), 0.06% (7 MPa less than p less than or equal to 50 MPa), 0.1% (50 MPa less than p less than or equal to 150 MPa), 0.2% (p greater than 150 MPa); density, 0.10%; and composition, 4.4 x 10-4. At greater than100 MPa and T = (280 or 440) K, the uncertainties in the density measurements increased to 0.14% and 0.22%, respectively. The data were compared with the available equation of state. The excess molar volumes of the mixtures were calculated and plotted as a function of temperature and pressure.
Compounds
#
Formula
Name
1
CO2
carbon dioxide
2
C4H10
butane
Datasets
The table above is generated from the ThermoML associated json file (link above).
POMD and RXND refer to PureOrMixture and Reaction Datasets. The compound numbers are included in properties, variables, and phases, if specificied;
the numbers refer to the table of compounds on the left.