Terephthalic Acid (TA), identified by its CAS number 100-21-0, is a fundamental aromatic dicarboxylic acid that plays a critical role in global industrial chemistry. Its chemical structure, featuring two carboxyl groups attached to a benzene ring at opposite positions, imparts unique properties that make it an indispensable precursor for a vast array of materials, most notably polymers.

The synthesis of Terephthalic Acid primarily involves the catalytic liquid-phase oxidation of paraxylene. This process is designed to yield a highly pure product, often exceeding 99% purity, which is essential for its downstream applications. The refined process ensures that impurities, such as 4-carboxybenzaldehyde (4-CBA), are minimized, guaranteeing the quality of polymers derived from it. The efficiency and scalability of these synthesis routes are key to meeting the global demand for TA.

Chemically, Terephthalic Acid is a white crystalline solid with a high melting point, typically sublimating rather than melting. Its limited solubility in water and common organic solvents necessitates specific handling and purification techniques, often involving conversion to its dimethyl ester for easier purification. Its acidic nature, with a pKa of around 3.51, allows it to react readily with bases and alcohols, forming salts and esters, respectively. These reactions are central to its use in polymerization.

The market significance of Terephthalic Acid is immense, driven primarily by its use in the production of polyethylene terephthalate (PET) and polybutylene terephthalate (PBT). PET, for instance, is used extensively in beverage bottles, food packaging, and polyester fibers for textiles. The sheer volume of these products manufactured annually highlights the critical importance of a stable and cost-effective supply of TA. Understanding the industrial grade terephthalic acid price is therefore vital for manufacturers in these sectors.

NINGBO INNO PHARMCHEM CO.,LTD. is a key player in ensuring the availability of high-quality Terephthalic Acid. We provide access to this vital chemical intermediate, supporting industries that rely on its unique properties to create advanced materials. Our commitment to quality and consistent supply chain management ensures that businesses can depend on us for their raw material needs, fostering innovation and growth across the manufacturing landscape.