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China, South Korea, and the United States are the leading exporters of phthalic anhydride, collectively accounting for over 60% of global exports in 2023–2024, while India, Germany, and Mexico represent the largest importers. Phthalic anhydride prices have remained sensitive to feedstock (naphthalene/o-xylene) volatility and regional supply-demand imbalances. Exports from China have expanded steadily amid growing downstream polyester resin demand, while European imports have declined modestly amid capacity rationalization and shifting polymer formulation preferences.
Phthalic anhydride is a white, crystalline solid with a slight, pungent odor and moderate volatility; it melts at approximately 131 °C and sublimes readily at elevated temperatures. It is an aromatic cyclic organic compound and a key chemical intermediate in industrial organic synthesis. Its primary use is in the production of orthophthalate plasticizers—especially di(2-ethylhexyl) phthalate (DEHP) and diisononyl phthalate (DINP)—for polyvinyl chloride (PVC) applications. It is also a critical precursor for unsaturated polyester resins (UPRs), alkyd resins, and certain dyes and pigments. Major application areas include construction materials, automotive coatings, marine composites, and industrial surface finishes.
The compound is a high-tonnage chemical and is widely used in a variety of industrial organic syntheses.
Phthalic Anhydride is moderately flammable, white solid (flake) or a clear, colorless, mobile liquid (molten) Characteristic, acrid, choking odor.
This chemical is included in Basic Chemicals - Polyurethanes. See more about what is Phthalic anhydride and Phthalic anhydride SDS information.
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