The (pressure,density, temperature) properties for n-butane in the compressed liquid phase were measured by means of a metal-bellows variable volumometer in the temperature range from 280 K to 380 K at pressures up to 200 MPa. The mole fraction purity of the n-butane used in the measurements was 0.9997. The expanded uncertainties (k = 2) in temperature, pressure, and density measurements have been estimated to be less than +-3 mK; 1.4 kPa (p less than 7MPa), 0.06% (7 MPa less than 50 MPa), 0.1% (50 MPa less than 150 MPa), and 0.2% (p greater than 150 MPa); and 0.09%, respectively. In the region above100 MPa at T = 280 K and T = 440 K, the uncertainty in density measurements increases from 0.09% to 0.13% and 0.22%, respectively. Eight (p,q,T) measurements at the same temperatures and pressures as the literature values have been conducted for comparisons. In addition, comparisons of the available equations of state with the present measurements are reported.
Compounds
#
Formula
Name
1
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.
Type
Compound-#
Property
Variable
Constraint
Phase
Method
#Points
POMD
1
Mass density, kg/m3 ; Fluid (supercritical or subcritical phases)
Temperature, K; Fluid (supercritical or subcritical phases)
Pressure, kPa; Fluid (supercritical or subcritical phases)