Used as an electrolyte additive in lithium-ion batteries to improve thermal stability and cycle performance. Enhances the formation of a stable solid electrolyte interphase (SEI) layer on the anode, which helps reduce electrolyte decomposition and increases battery safety. Also serves as a solvent and intermediate in organic synthesis, particularly in reactions requiring mild carbonylating or ethylating agents. Its low toxicity and biodegradability make it suitable for environmentally friendly chemical processes.