Used as a catalyst in the polymerization of olefins, particularly in Ziegler-Natta systems, where it helps control molecular weight and stereoregularity of the resulting polymers. Also serves as an initiator in the ring-opening polymerization of cyclic esters for producing biodegradable polyesters. Acts as a scavenger for impurities like water and oxygen in industrial polymerization processes, ensuring higher catalyst efficiency and product purity. Its reactivity makes it valuable in organic synthesis for alkylation and elimination reactions.