Effects of sodium chloride and sodium perchlorate on properties and partition behavior of solutes in aqueous dextran-polyethylene glycol and polyethylene glycol-sodium sulfate two-phase systems.

•Solvent properties of aqueous Dex-PEG and PEG-Na2SO4 ATPS examined.•Effects of NaCl and NaClO4 on the properties of Dex-PEG and PEG-Na2SO4 ATPS compared.•With each salt additive different osmolytes additives were used.•Effects of additives on partitioning of organic compounds and proteins studied.•Partition coefficients ranges in the systems compared.