Dioctyl terephthalate (DOTP) is a high-performance main plasticizer used in polyvinyl chloride (PVC) plastics. Compared with the commonly used diisooctyl phthalate (DOP), it has advantages such as heat resistance, cold resistance, difficulty in volatilization, extraction resistance, flexibility, and good electrical insulation performance. It shows excellent durability, soap water resistance, and low tenderness and softness in products. Due to its low volatility, the use of DOTP can fully meet the temperature resistance requirements of wires and cables, and can be widely used in cable materials resistant to 70 ° C (International Electrotechnical Commission IEC standard) and other PVC soft products. In addition to being widely used as a plasticizer in cable materials and PVC, DOTP can also be used in the production of artificial leather films. In addition, it has excellent solubility and can also be used as a plasticizer for acrylonitrile derivatives, polyvinyl butyraldehyde, nitrile rubber, nitrocellulose, etc. It can also be used as a plasticizer for synthetic rubber, coating additive, precision instrument lubricant, lubricant additive, and as a softener for paper.