Trihexyl O-butyrylcitrate is widely used as a plasticizer in the production of flexible PVC products. It enhances the flexibility, durability, and workability of materials such as vinyl flooring, cables, and synthetic leather. Its low volatility and good compatibility with polymers make it suitable for applications requiring long-term stability, such as automotive interiors and medical devices. Additionally, it is often chosen for its low toxicity, making it appropriate for use in food packaging and children’s toys. Its ability to resist migration and extraction ensures the longevity and safety of the end products.