Solubility of Benzoic Acid in Aqueous Polyethylene Glycol Solutions

Abstract

Solubility of benzoic acid in aqueous solutions of polyethylene glycols (PEG) (mol wt = 4000, 6000, and 20 000) containing 0.5, 1.0, 2.0, 3.0, 4.0, 5.0, and 6.0% polymers by weight are reported in the temperature range 30-55 °C. The solubility in the polymer solutions at a given temperature Is higher than that In water, Increases with Increasing polymer concentration and decreasing polymer molecular weight, and seems to approach a constant value at higher polymer concentrations. © 1980, American Chemical Society. All rights reserved.