The (p,q,T,x) properties of (x1 propane + x2 n-butane) with x1 = (0.0000, 0.2729, 0.5021, and 0.7308) over the temperature range from (280 to 440) K at pressures from (1 to 200) MPa
The (p,q,T,x) properties for (x1 propane + x2 n-butane) with x1 = (0.0000, 0.2729, 0.5021, and 0.7308) in the compressed liquid phase were measured by means of a metal-bellows variable volumometer over the temperature range from (280 to 440) K at pressures from (1 to 200) MPa. The mole fraction purities of the propane and n-butane used in the measurements were 0.9999 and 0.9997, respectively. The expanded uncertainties (k = 2) in temperature, pressure, density, and composition measurements have been estimated to be less than +-3 mK; 1.4 kPa (p 6 7 MPa), 0.06% (7 MPa less than p 6 50 MPa), 0.1% (50 MPa less than p 6 150 MPa), and 0.2% (p greater than 150 MPa); 0.09%; and 4.4 Ae 10 4, respectively. In the region above 100 MPa at T = (280 and 440) K, the uncertainty in density measurements increases from 0.09% to 0.13% and 0.22%, respectively. Comparisons of the available equation of state with the present measurements are reported. On the basis of the present results, the excess molar volume vE m of the mixtures was calculated and illustrated as a function of temperature and pressure.
Compounds
#
Formula
Name
1
C3H8
propane
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.