Used as an intermediate in organic synthesis, particularly in the preparation of surfactants and phase-transfer catalysts. It is effective in introducing ethylene glycol ether functionalities into molecules, enhancing solubility in both polar and nonpolar media. Commonly employed in the development of specialty chemicals for coatings, detergents, and emulsifiers. Also utilized in the synthesis of functional polymers and as a modifying agent in pharmaceutical compounds to improve bioavailability. Its reactivity with nucleophiles makes it valuable in alkylation processes.