Dimethyl isophthalate (DMI) is an organic compound belonging to the family of phthalate esters, characterized by its two methyl ester groups attached to the isophthalic acid backbone. Its chemical formula is C10H10O4. DMI is primarily used as a key intermediate in the production of polyesters and as a plasticizer in various applications. The compound provides enhanced durability, flexibility, and resistance to heat in polymer formulations. Additionally, dimethyl isophthalate is utilized in the synthesis of specialty chemicals and resins, making it valuable in industries such as textiles, coatings, and plastics. However, its environmental impact has raised concerns, necessitating careful handling.