Used primarily as a solvent in paints, coatings, and printing inks due to its effectiveness in dissolving resins and polymers. Also serves as a key intermediate in the production of phthalic anhydride, which is essential for making plasticizers used in flexible plastics like PVC. Additionally, o-Xylene is employed in the synthesis of dyes, perfumes, and other organic compounds. Its high boiling point and stability make it suitable for use in industrial cleaning agents and as a diluent in pesticide formulations.