Evaluated Alternative Non-phthalate plasticizer for demanding outdoor applications Plasticizers are used to make plastic softer and more flexible. The most commonly used plasticizers for PVC are phthalates. However, there are concerns regarding toxicity of certain phthalates. This causes an increasing pressure from both public authorities and customers to shift toward the use of phthalate-free alternatives. Proviron is helping this transition by offering high-quality non-phthalate plasticizers. Proviplast 3145 is a non-phthalate plasticizer that can be used in outdoor applications. It meets the requirements for the most demanding PVC applications where weather resistance and hydrolytic stability are critical.