What is titanium dioxide (TiO2) in vinyl fencing?

Titanium dioxide (TiO2) is a white pigment that is used in the production of vinyl fencing. It is added to the vinyl mixture during the extrusion process and helps to protect the fence from harmful UV rays and keep it looking bright and white. TiO2 is a durable and weather-resistant pigment that helps to extend the life of the fence and reduce fading and discoloration over time. It is a common ingredient in many vinyl products, including fencing, siding, and window frames, and is known for its high quality and performance.