4,4'-Dichlorobenzophenone, a chemical compound identified by CAS number 90-98-2, serves as a foundational element in numerous industrial synthesis processes. Its unique chemical structure and reactivity make it an indispensable intermediate across a spectrum of industries, including pharmaceuticals, agrochemicals, and the production of advanced materials. Understanding its synthesis and application is crucial for efficient industrial operations.

The synthesis of 4,4'-Dichlorobenzophenone is typically achieved through the Friedel-Crafts acylation reaction, where chlorobenzene reacts with 4-chlorobenzoyl chloride in the presence of a catalyst. This process is designed to produce high-purity 4,4'-Dichlorobenzophenone, which is particularly vital when it is to be used as a pharmaceutical intermediate. The demand for consistent quality in this segment means that businesses looking to buy 4,4'-Dichlorobenzophenone often place a high premium on suppliers who adhere to strict manufacturing standards and provide comprehensive quality documentation.

The broad utility of 4,4'-Dichlorobenzophenone is a testament to its versatility. In the pharmaceutical sector, it acts as a key building block for synthesizing a range of drug compounds. Its importance also extends to the agrochemical industry, where it is used in the formulation of pesticides and herbicides. Furthermore, it is employed in the dyestuffs industry to create specific colorants, demonstrating its widespread impact on manufacturing processes.

Beyond these established applications, 4,4'-Dichlorobenzophenone plays a role in the development of advanced polymers, such as polyether-polyketones (PEKs). These high-performance polymers possess superior thermal and mechanical properties, making them suitable for demanding applications in sectors like aerospace and automotive manufacturing. The ability to reliably source this chemical is thus critical for companies engaged in developing next-generation materials.

The physical and chemical properties of 4,4'-Dichlorobenzophenone are well-documented, including its common appearance as a white to off-white crystalline powder and a melting point in the range of 144-146 °C. Its solubility in hot acetone is also a key characteristic that aids in its handling and purification. Understanding these chemical properties of 4,4'-Dichlorobenzophenone is fundamental for its effective integration into complex synthesis workflows and for ensuring workplace safety.

In essence, 4,4'-Dichlorobenzophenone (CAS 90-98-2) functions as a critical backbone chemical, supporting innovation and production across various vital industries. Its reliable synthesis, coupled with its extensive applications as a pharmaceutical intermediate and in the creation of advanced materials, confirms its sustained importance in the chemical supply chain.