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

Table 6

Parameters of (5a) for the [EPy]Br (1) + salt (2) + water (3) ATPS at 𝑇 = 298.15 K.

System	𝑉^∗213	f 213	R ^2	sd^a
[EPy]Br + Na2HPO4	5.2183	0.2018	0.9828	0.64
[EPy]Br + K2HPO4	5.6397	0.1259	0.9824	2.39
[EPy]Br + K2SO4	11.4851	−0.0575	0.9814	1.10
[EPy]Br + C4O6H4KNa	4.7262	0.1524	0.9730	2.26

asd = (∑^𝑁_𝑖=1(𝑤^cal_𝑖−𝑤_𝑖^exp)²/𝑁)^0.5. Where 𝑤_𝑖^exp is the experimental mass fraction of IL and 𝑤^cal_𝑖 is the corresponding data calculated using (6). The term “N” represents the number of solubility data.