Octadecanophenone is primarily utilized in the synthesis of organic compounds, particularly in the production of surfactants and emulsifiers. It serves as a key intermediate in the creation of long-chain alkylphenols, which are essential in formulating industrial detergents and cleaning agents. Additionally, it is employed in the development of lubricant additives to enhance the performance and stability of oils under high-temperature conditions. In the pharmaceutical industry, it acts as a precursor for synthesizing specialized chemicals used in drug development. Its role in polymer chemistry includes the modification of resins and coatings to improve their durability and resistance properties.