Benzoin ethyl ether is widely used as a photoinitiator in ultraviolet (UV) curing applications. It plays a crucial role in initiating polymerization reactions in coatings, inks, and adhesives when exposed to UV light. This chemical is particularly valued for its efficiency in producing free radicals upon UV exposure, which accelerates the curing process and ensures rapid hardening of materials. It is commonly applied in industries such as printing, where fast-drying inks are essential, and in the production of protective coatings that require quick setting times. Additionally, benzoin ethyl ether is utilized in the manufacture of photoresists for electronics, aiding in the precise patterning of circuits on semiconductor devices. Its ability to enhance the speed and quality of UV-cured products makes it a key component in modern manufacturing processes.