DIDP is produced by esterifying Iso-Decanol and Phthalic Anhydride. DIDP's low volatility and superior low-temperature characteristic make it applicable to various processes. Due to DIDP's excellent electric resistivity and high temperature characteristic, it has been widely adopted in the manufacturing of PVC cables, especially high-temperature grade cables. Compared to DEHP in PVC processing, DIDP's gelation temperature is 5-10℃ higher than that of DEHP, which requires some processing conditions to be altered. The adjustment varies according to the specific production process and equipment. Generally, most DIDP products have the antioxidant Bisphenol A added to increase heat resistance and control oxidation, which prevents discoloration, decomposition and evaporation.