Liquid-Liquid Equilibrium Data for the Ionic Liquid N-Ethyl-Pyridinium Bromide with Several Sodium Salts and Potassium Salts

Table 10

Parameters of (9) for the [EPy]Br (1) + salt (2) + water (3) ATPS at 𝑇 = 298.15 K.

System	𝑘	β	R ^2	sd^a
[EPy]Br + Na2HPO4	0.0709	0.8535	0.9981	0.02
[EPy]Br + K2HPO4	0.1300	0.5822	0.9956	0.05
[EPy]Br + K2SO4	0.0656	0.2329	0.9984	0.03
[EPy]Br + C4O6H4KNa	0.0926	0.8957	0.9991	0.04

asd = (∑^𝑁_𝑖=1(100𝑤^top_{𝑖,𝑗,cal}−100𝑤^top_{𝑖,𝑗,exp})²+(100𝑤^bot_{𝑖,𝑗,cal}−100𝑤^bot_{𝑖,𝑗,exp})²/6𝑁)^0.5. Where N is the number of tie-lines and j is the number of components in each phase.