Succinic anhydride

Succinic anhydride is the cyclic anhydride derived from succinic acid, appearing as a white crystalline solid with strong acylating reactivity. It is widely used as an intermediate in the production of pharmaceuticals, agrochemicals, alkyd and polyester resins, surfactants, plasticizers, and paper sizing agents such as ASA. Its high reactivity toward alcohols and amines enables efficient introduction of succinyl groups, while offering good thermal stability and consistent purity for downstream processing. Typical users include manufacturers of active pharmaceutical ingredients, coatings, engineering polymers, lubricant additives, and paper chemicals seeking a reliable acylation and modification building block.