Phthalic anhydride is widely used worldwide for an extremely broad range of applications spanning from the plastics industry to the synthesis of resins, agricultural fungicides and amines. Its production is currently based on the vapor phase oxidation of o-xylene and naphthalene.

Application

Widely used in the production of plasticizers and pigments, and also as an anti-scorching agent, and as a light- and heat-stabilizer of polyolefins. Phthalic anhydride is a monomer for synthetic resins such as glyptal, the alkyd resins, and the polyester resins intended for contact with food.