Phthalic Anhydride For Resin Production

Xiamen Ditai Chemicals Co., Ltd. is one of the most reliable manufacturers and suppliers of phthalic anhydride for resin production in China. Welcome to buy high quality chemical products at competitive price from our factory.

Phthalic anhydride' is the organic compound with the formula C6H4(CO)2O. It is the anhydride of phthalic acid. Phthalic anhydride is a principal commercial form of phthalic acid.

Phthalic Anhydride for Resin Production is widely used in the manufacture of unsaturated polyester resins and alkyd resins, providing the chemical backbone needed for coatings, paints, and composite materials. It also finds application in the production of plasticizers and other downstream chemical intermediates, where consistent purity and stability are essential to ensure uniform curing, reliable performance, and efficient processing across various industrial formulations.

Phthalic anhydride supply is produced to meet the needs of industrial manufacturers who require consistent quality and reliable delivery. Each batch undergoes strict quality control to ensure stable purity and uniform performance, which is essential for resin and plasticizer production. We have extensive experience in exporting to international markets, and we provide complete technical documentation, including COA and MSDS, along with flexible packaging and shipping options to support bulk orders and long-term cooperation.

Phthalic anhydride can undergo hydrolysis, alcoholysis and ammonolysis, and can react with aromatic hydrocarbons to synthesize anthracquinone derivatives. Phthalic anhydride is industrially prepared by gas phase oxidation of naphthalene and air at 350 ~ 360℃ under the catalysis of vanadium pentoxide, and it can also be prepared by air oxidation of o-xylene. Phthalic anhydride can be used instead of phthalic acid and mainly reacts with monohydric alcohol to form esters, such as dibutyl phthalate and dioctyl phthalate.

Phthalic anhydride (CAS 85-44-9) has definite hazardous properties. According to the GHS classification standards, it is classified as Acute Oral Toxicity Category 4. Meanwhile, it can cause Skin Irritation (Category 2) and Serious Eye Damage (Category 1), and also has Skin Sensitization (Category 1) and Respiratory Sensitization (Category 1). This substance is flammable when exposed to high heat or open flame. The dust generated after sublimation is easy to be inhaled and may irritate the respiratory tract. Strict protective measures must be taken during handling and transportation.

Quality control is applied throughout the production and packaging process to maintain consistent specifications across all shipments. Each batch is tested before release to confirm compliance with agreed technical parameters. Complete documentation, including a Certificate of Analysis (COA) and Material Safety Data Sheet (MSDS), is provided with every order to support quality verification, regulatory requirements, and safe handling at the customer's facility.

Phthalic anhydride is supplied in export-ready packaging designed for safe handling and efficient transportation. Standard options include 25 kg bags as well as 500 kg and 1000 kg jumbo bags to accommodate different order volumes. Packaging materials are selected to protect the product from moisture and contamination during storage and transit. We support common international trade terms such as FOB, CIF, and CFR, and coordinate container loading and shipment schedules to ensure timely delivery to overseas customers.

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