Used primarily in the production of purified terephthalic acid (PTA), which is a key raw material for manufacturing polyethylene terephthalate (PET) plastic. PET is widely used in plastic bottles, food containers, and synthetic fibers for textiles. Also serves as a solvent in industrial applications and as a chemical intermediate in the synthesis of dyes, resins, and other organic compounds. Its high solvency power makes it useful in printing inks, adhesives, and coatings. Additionally, p-xylene is employed in the laboratory as a cleaning agent and in the formulation of paint thinners.