Trihexadecylaluminium is primarily used as a catalyst or co-catalyst in various polymerization processes, particularly in the production of polyolefins like polyethylene and polypropylene. Its role is crucial in facilitating the polymerization reaction, ensuring efficient and controlled polymer formation. Additionally, it is employed in organic synthesis, where it acts as a reducing agent or alkylating agent, enabling the introduction of alkyl groups into organic molecules. This chemical is also utilized in the development of specialty chemicals and materials, contributing to advancements in industries such as plastics, coatings, and adhesives. Its application is often tailored to specific industrial needs, leveraging its reactivity and stability in chemical processes.