Octadecyl 3-Mercaptopropionate is widely used as a surface modifier in the production of nanoparticles, particularly gold and silver nanoparticles. It helps stabilize these particles by forming a protective layer, preventing aggregation and enhancing their dispersion in various solvents. This chemical is also employed in the development of self-assembled monolayers (SAMs) on metal surfaces, which are crucial for applications in biosensors, corrosion inhibition, and surface functionalization. Additionally, it serves as a key component in the synthesis of polymeric materials, where it acts as a chain transfer agent to control molecular weight and improve polymer properties. Its thiol group enables strong binding to metal surfaces, making it valuable in coatings and adhesives for improved durability and performance.