Used as a reactive diluent and modifier in epoxy resin systems, enhancing flexibility and reducing viscosity without compromising cure performance. It improves adhesion and chemical resistance in coatings, adhesives, and composites. Commonly employed in industrial and electronic applications where low volatility and high reactivity are required. Also serves as a building block in specialty polymers and surface modifiers due to its terminal alkyne functionality, enabling click chemistry applications in material science and chemical synthesis.