Used primarily as a monomer in the production of high-performance polyesters such as polytrimethylene terephthalate (PTT), which is widely used in textile fibers for carpets and apparel due to its excellent resilience, softness, and stain resistance. Also serves as a solvent and carrier in cosmetics and personal care products, valued for its moisturizing properties and low irritation potential. Increasingly used in eco-friendly antifreeze formulations and as a building block in sustainable polymers derived from renewable feedstocks. Additionally, finds use in the synthesis of adhesives, coatings, and plasticizers where improved flexibility and durability are required.