Phthalic Anhydride is a vital industrial chemical appearing as white crystalline flakes or in molten form, derived from the catalytic oxidation of ortho-xylene, and serving as a primary workhorse in polymer production. Its predominant use is in the synthesis of phthalate plasticizers, which impart flexibility to PVC products, and it is equally essential as a raw material for manufacturing unsaturated polyester resins and alkyd resins used in coatings.
1,2-Benzenedicarboxylic anhydride,Phthalandione
C₈H₄O₃
85-44-9
25kg/bag, 500kg/bag, 600kg/bag
Reach, ISO9001
Global Reach: Our Phthalic Anhydride has been successfully exported and applied in key markets across the globe, including but not limited to Thailand, Malaysia, Korea, UAE and South Africa. Our product has consistent quality and ability to meet diverse international standards.
Equivalent Alternatives: Our product has served as a reliable alternative to Nanya, Aekyung, Polynt for several local manufacturers, helping them reduce costs with comparable (or even superior) results in performance.
The largest application of Phthalic Anhydride is in the manufacture of phthalate ester plasticizers, such as DOP (Dioctyl Phthalate) and DINP (Diisononyl Phthalate) . These plasticizers are primarily used to impart flexibility, durability, and workability to Polyvinyl Chloride (PVC) . You can find these materials in numerous everyday products, including wire and cable insulation, synthetic leather, flexible flooring, and various films and sheets .
A significant portion of PA is consumed in the production of Unsaturated Polyester Resins (UPR) . When reinforced with fiberglass, these resins create strong, lightweight, and corrosion-resistant composite materials. These composites are essential in the transportation sector (for car bodies and boat hulls), construction (for tanks, pipes, and building panels), and in manufacturing sanitary ware like bathtubs and sinks .
PA is a key component in the synthesis of alkyd resins, which are the backbone of the synthetic coatings industry . These resins are used to formulate a wide range of products, including architectural paints for homes and buildings, industrial enamels, and quick-drying varnishes. Coatings based on alkyd resins are renowned for their excellent gloss retention, durability, and weather resistance .
As a crucial chemical intermediate, PA is used in the production of high-performance dyes and pigments . Most notably, it is a key raw material for Phthalocyanine Pigments, which are valued for their brilliant blue and green shades, high stability, and extensive use in printing inks, plastics, and automotive paints . It is also used in the synthesis of anthraquinone-based dyes for the textile industry
Beyond its major uses, PA finds important niches as an intermediate in the synthesis of active ingredients for pharmaceuticals and agrochemicals . It is involved in the production of certain drugs and contributes to the manufacturing of insecticides and herbicides, supporting the agricultural and healthcare industries .
The electronics industry utilizes PA-based materials in several advanced applications. It can be used in electronic adhesives, encapsulation materials to protect sensitive components, and protective layers for electronic circuit boards, where its properties help ensure long-term stability and reliability
High Purity for Plasticizer and Resin Production: Our Phthalic Anhydride is refined to high purity levels, which is essential for producing high-quality phthalate plasticizers and unsaturated polyester resins with consistent properties.
Competitive Pricing & Supply Stability: As a key industrial chemical, we offer competitive pricing backed by a robust and stable supply chain to support large-scale manufacturing needs.
Handled with Expertise: We understand the handling requirements of solid acid anhydrides and ensure proper packaging and transportation to maintain product integrity.
We are committed to providing high-quality Phthalic Anhydride that meets stringent international standards. Our focus on innovation and sustainability ensures that our products not only enhance your applications but also align with evolving environmental regulations and industry trends.
