Phase Diagram Data for Several PEG + Salt Aqueous Biphasic Systems at 25 °C

Phase diagrams determined by the cloud point method at 25 °C, including tie lines assigned from mass phase ratios according to the lever arm rule, are presented for several poly(ethylene glycol) (PEG) + salt aqueous biphasic systems (ABS). The systems include PEG-1000 + K 3 PO 4, PEG-2000 + K 3 PO 4, PEG-3400 + K 3 PO 4, and PEG-2000 in combination with the following salts K 2 CO 3, (NH 4 ) 2 SO 4, Li 2 SO 4, ZnSO 4, MnSO 4, and NaOH.