Isophthalic acid CAS:121-91-5

Isophthalic acid (IPA), classified as a diacid, is an aromatic compound that plays a vital role in the production of high-performance polymers and resins. With a molecular weight of approximately 166.13 g/mol, isophthalic acid appears as a white crystalline solid at room temperature, exhibiting good solubility in organic solvents like ethanol and acetone while being less soluble in water. One of the primary uses of isophthalic acid is in the manufacture of unsaturated polyester resins. By incorporating IPA into polymer formulations, manufacturers can enhance the properties of the resulting materials, including improved thermal stability, mechanical strength, and resistance to chemical degradation. As a result, these modified polyesters are widely utilized in applications such as automotive parts, construction materials, and consumer goods. In addition to polyesters, isophthalic acid is essential for producing polyethylene terephthalate (PET), a commonly used thermoplastic polymer known for its transparency and excellent impact resistance. By co-polymerizing isophthalic acid with terephthalic acid, manufacturers can create PET with enhanced barrier properties and reduced crystallinity, making it suitable for packaging food and beverages. Isophthalic acid also finds application in the coatings industry, particularly in the formulation of high-performance paints and varnishes. The incorporation of isophthalic acid helps improve the durability and adhesion of coatings, making them more resilient to environmental factors like moisture and UV radiation. Moreover, isophthalic acid acts as an important intermediate in synthesizing various chemicals, including pharmaceuticals and agrochemicals. While isophthalic acid is generally considered safe, proper handling guidelines should be observed, as inhalation or skin contact can lead to irritation. Overall, isophthalic acid's versatility and performance-enhancing properties make it a crucial ingredient in numerous industrial processes and products.