Adipic Anhydride, a cyclic anhydride with the CAS number 2035-75-8, is a compound whose chemical structure and reactivity are central to its utility in various synthetic applications. NINGBO INNO PHARMCHEM Co., Ltd. offers insights into the fundamental chemistry of this important intermediate.

The molecular formula of Adipic Anhydride is C6H8O3. Structurally, it is a six-membered ring containing an anhydride functional group. This cyclic structure, also known as Oxepane-2,7-dione, is formed from adipic acid. While the cyclic form is described as relatively unstable and prone to reverting to a linear polymeric anhydride upon distillation, it is the reactive form that is often utilized in synthesis.

The anhydride group in Adipic Anhydride is highly electrophilic, making it susceptible to nucleophilic attack. This reactivity is the basis for many of its applications. For instance, reaction with alcohols or amines can lead to the formation of esters or amides, respectively. This is precisely why it functions as an esterifier for food starch and is used in the creation of polyamide resins.

In organic synthesis, Adipic Anhydride can participate in various reactions, including ring-opening polymerization and acylation reactions. Its ability to undergo these transformations makes it a valuable reagent for chemists seeking to introduce specific functional groups or build complex molecular structures. The controlled synthesis of hexanedioic anhydride derivatives is a testament to its versatility.

NINGBO INNO PHARMCHEM Co., Ltd. provides Adipic Anhydride of high purity, ensuring that chemists can reliably utilize its reactive properties. By understanding the nuances of Adipic Anhydride's chemical behavior, researchers and manufacturers can effectively employ it to achieve desired synthetic outcomes, driving innovation in the chemical industry. The price and availability of this essential chemical intermediate are key considerations for many ongoing projects.