In the vast landscape of organic chemistry and material science, certain molecules stand out for their unique properties and versatile applications. Biphenyl-4,4'-dicarboxylic acid (CAS 787-70-2) is one such compound, recognized for its rigid aromatic structure and the presence of two carboxylic acid groups. This white or off-white powder is a cornerstone for chemists and material scientists aiming to develop advanced polymers, specialty chemicals, and pharmaceutical intermediates. Understanding its characteristics and where to procure it effectively is vital for successful research and industrial application.

Chemical Properties and Characteristics

Biphenyl-4,4'-dicarboxylic acid, also known by synonyms such as 4,4'-bibenzoic acid or 4,4'-dicarboxydiphenyl, possesses a molecular formula of C14H10O4 and a molecular weight of approximately 242.23 g/mol. Its defining feature is the biphenyl unit, which provides a rigid, planar backbone. This rigidity contributes to the high thermal stability and mechanical strength observed in materials derived from it. The two carboxylic acid groups (-COOH) positioned at opposite ends of the biphenyl system are highly reactive, allowing for a wide range of chemical transformations. These include esterification, amidation, and salt formation, making it an ideal monomer for polymerization reactions and a versatile building block in organic synthesis. Typical purity levels offered by manufacturers are 99.5% min.

Diverse Industrial Applications

The applications of Biphenyl-4,4'-dicarboxylic acid are broad and impactful across several industries. In the polymer sector, it serves as a crucial monomer for the synthesis of high-performance polyesters, polyamides, polyimides, and liquid crystal polymers. These materials find extensive use in demanding applications such as engineering plastics, aerospace components, films, and coatings due to their superior thermal resistance, mechanical integrity, and chemical inertness. Furthermore, it is a key intermediate in the pharmaceutical industry for the synthesis of Active Pharmaceutical Ingredients (APIs) and their derivatives, contributing to the development of new therapeutic agents. Its utility also extends to specialty chemicals, including advanced adhesives and resins, where its unique structure enhances material performance.

Sourcing and Procurement Guidance

For chemists and R&D professionals intending to buy Biphenyl-4,4'-dicarboxylic acid, sourcing from reliable manufacturers and suppliers is paramount. China is a primary source for this chemical, with many manufacturers offering competitive prices and consistent quality. When making an inquiry, it is important to specify the required purity (e.g., 99.5% min), CAS number (787-70-2), and desired quantity. Requesting comprehensive technical documentation, such as a Certificate of Analysis (CoA) and Safety Data Sheet (SDS), ensures product quality and safe handling. Evaluating potential suppliers based on their experience, production capacity, and customer reviews can help secure a dependable supply chain for your projects.

As a leading supplier of fine chemicals and intermediates, we offer Biphenyl-4,4'-dicarboxylic acid to meet the rigorous demands of modern research and industry. Our commitment to quality and customer service ensures you receive a product that meets your exact specifications. Contact us for a quote and to learn more about purchasing options to support your material science and pharmaceutical development needs.