N-Octadecylurea is primarily used as a surface modifier and additive in various industrial applications. It is commonly employed in the production of coatings and paints, where it enhances surface properties such as water repellency and durability. The compound is also utilized in the formulation of adhesives and sealants to improve their performance and stability under different environmental conditions. Additionally, N-Octadecylurea finds application in the development of specialty chemicals for the textile industry, where it is used to impart water resistance and other functional properties to fabrics. Its ability to modify surface characteristics makes it valuable in the creation of advanced materials for diverse industrial uses.