Evaluation of the impact of phosphate salts on the formation of ionic-liquid-based aqueous biphasic systems

Aqueous biphasic systems: a benign route using cholinium-based ionic liquids

“…26 Indeed, this trend agrees with our previously reported findings regarding imidazolium-based ionic liquids and inorganic salts in which the tosylate anion is more prone to undergoing liquid-liquid demixing than a wide variety of other anions. 27 The same argument is valid for the inclusion of a benzyl group at the cholinium cation, , with a similar number of carbons at the anion, the presence of additional hydroxyl groups enhances the affinity of the anion for water and consequently decreases the capacity for phase separation. In the case of cholinium malate, with its two hydroxyl terminal groups, no phase separation was in fact observed, as previously mentioned.…”

Effects of phosphate-based monobasic and tribasic inorganic salts on hydration characteristics of saccharides and their derivatives

“…The significant positive Δ t V 2°r esults indicate that phosphate salts enhance the overall structural order due to solute-cosolute interactions in solutions [11,16,18]. On the basis of cosphere overlap model [46], the hydrophilic-ionic type interactions between polar sites (-OH, -C_O, -O-) of the solute molecules and ions of the cosolute contribute a positive volume change and predominate over the hydrophobicionic interactions between non-polar (R = CH, CH 2 , CH 3 ) groups of the solutes and ions of the cosolute.…”

“…Also, these salts are frequently used as the biotechnological fluids. Aqueous salt-polymer two phase systems are utilized for large scale biochemical purification [16][17][18][19].…”

Effects of acidic concentrations, temperatures and nitrates on the solubility of K2SiF6 in phosphoric acid and nitric acid solutions

“…According to this, the dissociation of phosphoric acid is step-wise and each dissociation gives up an H + and a phosphate anion, respectively. Due to the presence of high charge density ions, all the dissociated phosphate anions of H 2 PO 4 -, HPO 4 2-, and PO 4 3-exhibit strong salting-out effect [18]. Therefore the combined effects of the relative low [H + ] concentration and the strong salting-out effect of phosphate anions increase the mean activity coefficient, resulting in the difficulty of K 2 SiF 6 to dissolve in phosphoric acid solutions.…”