Used as a non-ionic surfactant and hydrophilic building block in specialty formulations. Its polyether chain provides water solubility and flexibility, making it suitable for surface coatings, adhesives, and functional polymers. Commonly employed in the synthesis of block copolymers for drug delivery systems due to biocompatibility and low toxicity. Also serves as a modifier in silicone chemistry, improving compatibility and emulsification in personal care products. Its terminal allyl group allows for easy incorporation into UV-curable resins via thiol-ene reactions.