Di(2-propylheptyl) phthalate, also known as DPHP, is used as a plasticizer in the production of PVC and other copolymers. DPHP can be used as a direct replacement for DEHP and DINP in a range of applications due to its thermal resistance, excellent durability and transparency. It is used in a variety of processes such as calendering, extrusion and injection molding.