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

Table 7

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

System	𝑉^∗213	R ^2	sd^a
[EPy]Br + Na2HPO4	8.4568	0.0758	21.75
[EPy]Br + K2HPO4	8.5867	0.8820	38.25
[EPy]Br + K2SO4	10.2939	0.9601	2.57
[EPy]Br + C4O6H4KNa	7.4313	0.1268	160.50

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 (7). The term “N” represents the number of solubility data.