Phthalic Anhydride PA for DOP/DINP Plasticizers – Raw Material of PVC Products

• Customization: Available
• CAS No.: 85-44-9
• Formula: C8h4o3
• Model NO.: PA
• EINECS: 201-607-5
• Classification: Organic Anhydride
• Shape: Flake
• Grade Standard: Industrial Grade
• Source: O-Xylene Oxidation Process
• Transport Package: 25kg PP Woven Bags/500kg Jumbo Bags
• Trademark: Achilles
• Origin: China
• HS Code: 29173500
• Production Capacity: 200000tons/Year

Product Description

Phthalic Anhydride (PA) is a vital industrial chemical widely used as a key raw material in the production of plasticizers, unsaturated polyester resins (UPR), and alkyd resins. Our premium-grade PA is manufactured through advanced catalytic oxidation of o-xylene, ensuring exceptional purity (≥99.7%) and consistent quality. The product appears as white crystalline flakes with low free acid content (<0.1%), offering excellent stability and reactivity for diverse applications.

As a leading manufacturer, we supply phthalic anhydride that meets stringent international standards including GB/T 15336, REACH, and ISO 9001. Our PA is particularly valued in the PVC industry for plasticizer production (DOP/DINP), in composite materials for UPR formulations, and in coating applications for alkyd resin synthesis. The product is carefully packaged in 25kg moisture-proof woven bags or 500kg jumbo bags to ensure integrity during storage and transportation.

With comprehensive quality control from raw materials to finished products, we guarantee reliable performance in your manufacturing processes. Our phthalic anhydride features:

• High purity with minimal impurities

• Excellent solubility in common organic solvents

• Consistent melting point (131-134°C)

• Low moisture content for extended shelf life

We offer flexible solutions including customized specifications, competitive bulk pricing, and global logistics support to meet your specific requirements. Technical datasheets and samples are available upon request.

Primary Applications

• Plasticizers: Key intermediate for phthalate-based plasticizers (e.g., DOP) used in PVC products

• Resins & Polymers: Critical component in UPR for fiberglass, coatings, and composite materials

• Coatings & Dyes: Used in alkyd resins for paints, varnishes, and pigment production

• Chemical Synthesis: Intermediate for pharmaceuticals, agrochemicals, and specialty chemicals

Product Name: Phthalic Anhydride (PA)
CAS No.: 85-44-9
Molecular Formula: C8H4O3
Appearance: White crystalline flakes or powder
Purity: ≥99.7% (Industrial Grade), ≥99.9% (High-Purity Grade)
Packaging: 25kg woven bags, 500kg jumbo bags, or customized packagingQingdao Achilles Chemical has been dedicated to provide global customers one-stop chemical sourcing solutions.
Throughout the years, we've been working on Oleo chemicals, amines, coating&resins, polyurethane, homecare & personal care and many others in chemical industry.
Achilleschem is licensed distributor of hazardous chemicals.

Our Advantages
1. Professional team: 10 years+ experience in chemical industry.
2. Services: fast response, market analysis, qualified products, safe logistics, nice documents.
3. Flexible payment: TT, L/C, DP....
4. Full set certification.
Q: What is the MOQ of this product?      
A: One pallet.
Q: What payment terms can you offer?      
A: TT, LC, DP.
Q: Do your products have COA ?      
A: Yes. COA, TDS and MSDS can be provided.
Q: Can you send a sample?      
A: Yes,for more detailes please contact me.