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

Table 8

Parameters of (6) and (7) for the [EPy]Br (1) + salt (2) + water (3) ATPS at 𝑇 = 298.15 K.

System	𝑘1	𝑛	𝑅^21	sd1^a	𝑘2	𝑟	𝑅^22	sd2^a
[EPy]Br + Na2HPO4	0.5605	1.1210	0.8815	2.24	1.6422	0.8044	0.8802	0.06
[EPy]Br + K2HPO4	0.0309	0.8786	0.9946	0.08	22.7372	0.9823	0.9950	0.16
[EPy]Br + K2SO4	0.0190	1.2043	0.9984	0.07	19.0417	0.5867	0.9978	0.11
[EPy]Br + C4O6H4KNa	0.0956	1.1154	0.9828	0.85	4.5475	0.7426	0.9868	0.06

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})²/2𝑁)^0.5. Where N is the number of tie-lines and j = 1 and j = 2, sd₁ and sd₂ represent the mass percent standard deviations for [EPy]Br and the salt, respectively.