Purified Isophthalic Acid

Product Details:

  • Isophthalic Acid is an aromatic dicarboxylic acid, characterized by a non-linear structure due to the para position of the carboxyl groups. This non-linearity gives IPA improved thermal stability and durability over its isomers. IPA exists in a white, crystalline solid form at room temperature and has a relatively high melting point (345-348°C).

  • Chemical name:


  • Chemical formula:

    C8H6O4 / m-C6H4(COOH)2

  • CAS Number:





  • 1 ) Resin production: A significant portion of Isophthalic Acid is utilized in the manufacture of unsaturated polyester resins (UPRs). Its unique molecular structure imparts these resins with improved thermal stability, chemical resistance, and dimensional stability. UPRs are widely used in reinforced plastics, coatings, and gel coats.
  • 2 ) High-performance polymers: Isophthalic Acid serves as a vital monomer in the production of polyethylene terephthalate (PET) and other high-performance polymers. PET, recognized for its robustness, clarity, and chemical inertness, finds extensive use in the packaging industry, notably for beverage bottles.
  • 3 ) Ink and Coatings: Isophthalic Acid is also utilized in the production of inks and coatings due to its ability to enhance the final product’s durability and resistance to external agents.
  • 4 ) Corrosion Inhibitor: Additionally, IPA functions as an effective corrosion inhibitor in certain applications. It can protect materials, such as steel, from corrosive environments by forming a protective layer over the surface.
  • 5 ) Research and Development: Due to its unique properties and versatility, Isophthalic Acid is continually studied for potential applications in emerging fields like bio-based polymers and nanotechnology.