Solubility parameters of hydrocarbons

Abstract

Information available in the literature on vapor pressures, saturated vapor and liquid densities, and critical constants, for different hydrocarbons, has permitted the calculation of δ, the solubility parameter advanced by Hildebrand, at temperatures up to and including the critical point. For these hydrocarbons, the residual quantity, δ‐δc was found to depend on 1‐TR according to the relationship, where k appears to be a constant within different classes of hydrocarbons. Values of δ calculated with this equation were compared with the corresponding values used to develop it, and produced an average deviation of 0.85% for 153 values considered which represented 17 hydrocarbons.

Liquid‐phase polymerization of propylene with a highly active catalyst

“…The solubility parameters are calculated from the following correlations (Bradford and Thodos, 1966;Hutchinson and Ray, 1990 …”

Solubility Parameters of Bitumen-Derived Narrow Vacuum Resid Fractions

“…The solubility parameter of propane can be estimated using the Bradford and Thodos equations: δ 1 − δ C = 15.24 ( 1 − T r ) 0.446 where δ 1 is the solubility parameter of liquid propane, δ C is the solubility parameter of propane (4.83 MPa 1/2 ) at critical conditions, and T r is the reduced temperature.…”

Solubility Parameters of Permanent Gases

“…Yosim and Owens [21] used the density and Δ V data from a secondary source, from which the value H ( b ) MPa 1/2 = 14.56 is derived. Bradford and Thodos [66] reported expressions and parameters from which the solubility parameter was supposed to be calculated, but the resulting value (7.9 MPa 1/2 ) is too small. Gilmour et al [98] reported density and Δ V data from an undisclosed source, from which the value H ( b ) MPa 1/2 = 15.5 is deduced.…”

“…The latter authors provided Δ V ( b )/kcal mol −1 = 4.49, that is, 18686 J mol −1 at the boiling point b = 231.88 K, so that the same value H ( b ) = 14.90 MPa 1/2 is derived. Bradford and Thodos [66] reported the parameters of the following expression:…”

“…Similarly, Blanks and Prausnitz [64] reported values of H (298 K)/(cal cm −3 ) 1/2 from undisclosed sources for CH 4 , C 2 H 4 , C 2 H 6 , C 3 H 6 , C 3 H 9 , and C 4 H 10 , shown in Table 4. Bradford and Thodos [66] provided the parameters for equation (5) for CH 4 , C 2 H 6 , C 3 H 8 , and C 4 H 10 , from which solubility parameters at any temperature may be evaluated. The values at 298 K are shown in Table 4, except for methane, for which c < 298 K. Gilmour et al [98] reported H ( b )/(cal cm −3 ) 1/2 values for CF 4 , C 2 F 6 , CH 4 , C 2 H 6 , C 3 H 8 , and C 4 H 10 that agree well with the values in Table 2.…”