Terephthalic acid (TA), with CAS number 100-21-0, is a dicarboxylic acid that plays an indispensable role in the global chemical economy. Its production is a testament to sophisticated chemical engineering, with the primary industrial route being the catalytic oxidation of p-xylene. This process, often carried out in acetic acid solvent and employing a cobalt-manganese-bromide catalyst, transforms p-xylene into terephthalic acid. While efficient, the process requires careful control to manage impurities, such as 4-carboxybenzaldehyde (4-CBA), which are then removed in a subsequent purification step to yield purified terephthalic acid (PTA).

The terephthalic acid synthesis process is critical for industries relying on high-purity PTA. The key terephthalic acid chemical properties include its appearance as a white crystalline powder, a high melting point (around 300°C), and low solubility in water. These characteristics make it a stable and manageable chemical intermediate. Its molecular formula, C8H6O4, highlights its structure as a benzene ring with two carboxyl groups at opposite ends, a configuration that is crucial for its polymerization capabilities.

The global market demand for terephthalic acid is overwhelmingly driven by its use as a building block for polymers. The vast majority of terephthalic acid produced annually is converted into polyethylene terephthalate (PET). This has led to extensive research and development aimed at optimizing the p-xylene oxidation to terephthalic acid reactions and improving purification techniques. Companies looking to buy terephthalic acid online often seek suppliers who can guarantee consistent quality and large-scale availability to meet the demands of PET manufacturing.

The significance of terephthalic acid extends beyond PET. It is used in the production of polybutylene terephthalate (PBT), a thermoplastic polyester known for its strength, rigidity, and electrical insulation properties, making it valuable in automotive and electronics applications. Furthermore, it serves as a raw material for plasticizers, such as dioctyl terephthalate, which are added to plastics like PVC to increase their flexibility and durability. These diverse terephthalic acid applications showcase its versatility as a chemical intermediate.

For businesses involved in coatings, terephthalic acid is an important component in polyester resins. These resins are used in high-performance coatings for various substrates, offering excellent durability, gloss retention, and resistance to chemicals and weathering. The demand for such advanced coatings contributes to the consistent market requirement for high-quality terephthalic acid.

At NINGBO INNO PHARMCHEM CO.,LTD., we are committed to being a premier supplier of terephthalic acid. We understand the intricate processes involved in its production and the critical need for purity and reliability. By offering competitive terephthalic acid price and a robust supply chain, we aim to support our customers in sectors ranging from petrochemicals and textiles to specialty chemicals and pharmaceuticals. Trust us for your essential chemical intermediate needs.