Polyethylene glycol is used as an excipent in pharmaceutical products. It is used in the precipitation of proteins as well as in the separation and purification of biomolecules and in the induction of cell hybridization. It acts as a fusing agent to enhance the effect of macrophages on hybridoma; as a vascular agent in preclinical work; as an anti-foaming agent in food and as the gate insulator in an electric double-layer transistor to enhance superconductivity in an insulator.

This Thermo Scientific Chemicals brand product was originally part of the Alfa Aesar product portfolio. Some documentation and label information may refer to the legacy brand. The original Alfa Aesar product / item code or SKU reference has not changed as a part of the brand transition to Thermo Scientific Chemicals.