Isophthalic Acid (IPA), designated by CAS 121-91-5, is a fundamental aromatic dicarboxylic acid that underpins a variety of industrial applications, particularly in the polymer and coatings sectors. As a vital chemical intermediate, understanding its properties, production, and sourcing is crucial for manufacturers and formulators. This guide, from a leading Isophthalic Acid supplier, aims to provide a comprehensive overview for businesses looking to integrate IPA into their operations.

Chemically, Isophthalic Acid is an isomer of phthalic acid and terephthalic acid, with the formula C8H6O4. It typically presents as a white crystalline powder. Its key chemical properties include a melting point around 341-343 °C, indicating significant thermal stability. While it has low solubility in cold water, it dissolves in oxygenated solvents and alcohols. IPA is a carboxylic acid, meaning it can undergo esterification reactions, a fundamental step in the synthesis of polyesters and other polymers. It's important to note its stability, though it is incompatible with strong oxidizing agents and strong bases, and its dust can form explosive mixtures in air.

The industrial production of Isophthalic Acid is primarily achieved through the oxidation of meta-xylene using oxygen, typically employing a cobalt-manganese catalyst. This method is highly efficient, allowing for large-scale production to meet global demand. Laboratory preparations can involve other oxidation routes or fusion reactions, but the catalytic oxidation of meta-xylene remains the dominant commercial process due to its economic viability and scalability. As a manufacturer, we leverage advanced production techniques to ensure high yields and consistent product quality.

When it comes to sourcing Isophthalic Acid, buyers often look for a supplier that offers both quality assurance and competitive pricing. The market for IPA is robust, with numerous manufacturers and distributors globally. However, securing a reliable supply chain is key. We, as a time-honored Isophthalic Acid supplier with our own manufacturing facilities, provide direct access to high-purity material (≥99.8% minimum assay). This direct sourcing model eliminates intermediaries, offering cost advantages and enhanced transparency regarding product specifications and origin.

Key considerations for buyers include not only the chemical specifications (purity, impurity profiles, physical form) but also packaging options (e.g., 500kg/1000kg bags), lead times, and technical support. We are dedicated to meeting these needs, offering comprehensive documentation such as TDS and SDS, and working closely with clients to ensure their requirements are met. If you are looking to buy Isophthalic Acid or need a consistent, high-quality supply for your UPR, coatings, or plastic applications, we encourage you to reach out for a consultation and a quote. Our expertise and manufacturing capacity make us an ideal partner for your chemical sourcing needs.