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

Table 9

Parameters of (8) for the [EPy]Br (1) + salt (2) + water (3) ATPS at 𝑇=298.15 K.

System	𝑘𝑠	Intercept	R ^2	𝛿(𝑘𝑠)^b	𝛿(intercept)^c	100sd^a
[EPy]Br + Na2HPO4	2845.9	−1.8166	0.9981	88.60	0.1512	0.09
[EPy]Br + K2HPO4	1781.0	0.0146	0.9999	9.71	0.0025	0.60
[EPy]Br + K2SO4	4837.4	−0.1873	0.9963	208.70	0.0590	2.41
[EPy]Br + C4O6H4KNa	1231.1	−0.0241	0.9996	18.37	0.0167	2.45

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. 𝛿(𝑘_𝑠)^b is the standard deviation for the fitting parameters of “𝑘_𝑠”. 𝛿(intercept)^c is the standard deviation of the fitting parameters of the “intercept”.