Used primarily as an intermediate in the production of plasticizers, particularly for polyvinyl chloride (PVC). It undergoes hydrogenation to form 2-ethylhexanol, which is then esterified with phthalic anhydride to produce dioctyl phthalate (DOP), a common plasticizer that imparts flexibility and durability to plastics. Also serves as a precursor in the synthesis of surfactants, lubricants, and specialty chemicals used in coatings and adhesives. Its reactivity makes it valuable in aldol condensation processes for building larger organic molecules in industrial chemistry. Additionally, it finds minor applications in the fragrance and flavor industry due to its characteristic green, leafy odor, used in perfumes, cosmetics, and food products.