Premium Phthalic Anhydride (PA): The Essential Building Block for High - Performance Polymers and Chemicals
Major Application Fields
1. Polyester Resins and Thermoplastics: The Core of Industrial Polymers
Phthalic Anhydride is primarily used in the production of unsaturated polyester resins (UPRs), a critical component in fiberglass-reinforced plastics (FRPs):
FRP Applications:
In automotive manufacturing (e.g., European car manufacturers), UPRs derived from PA are used to produce lightweight body panels, bumpers, and under-the-hood components, reducing vehicle weight and improving fuel efficiency.
In wind energy, PA-based resins are essential for manufacturing wind turbine blades, providing high strength and durability to withstand extreme weather conditions in offshore farms (e.g., North Sea projects).
Thermoplastic Additives:
Acts as a modifier in polyvinyl chloride (PVC) production, enhancing flexibility and processability. For example, in Asian PVC pipe factories, PA-based plasticizers improve the impact resistance of pipes for water and sewage systems.
2. Paints, Coatings, and Adhesives: Performance and Durability
Alkyd Resins:
PA is a key ingredient in alkyd resins, used in architectural paints (e.g., exterior house paints in North America) for their excellent weather resistance and color retention. Alkyd-based coatings also protect metal surfaces in industrial settings (e.g., bridges, machinery) from corrosion.
Epoxy Coatings:
In composite coatings, PA derivatives enhance the adhesion and chemical resistance of epoxy systems, critical for flooring in pharmaceutical cleanrooms and food processing facilities.
Adhesives:
Used in 热熔胶 (hot-melt adhesives) for packaging and bookbinding, PA improves the melting point and bonding strength, ensuring reliable performance in high-speed manufacturing lines (e.g., European packaging industries).
3. Plasticizers and Specialty Chemicals: Enhancing Material Properties
Phthalate Plasticizers:
PA is the precursor for producing diisononyl phthalate (DINP) and diethyl phthalate (DEP), widely used in PVC products like toys, upholstery, and medical devices. These plasticizers enhance flexibility while maintaining compliance with EU REACH regulations for low toxicity (e.g., in children’s products).
Pharmaceutical Intermediates:
In pharmaceutical synthesis, PA derivatives are used in the production of drugs like anti-inflammatory agents and antifungal compounds. For example, it plays a role in the synthesis of cephalosporin antibiotics, critical for treating bacterial infections worldwide.
4. Agriculture and Pest Control: Sustainable Solutions
Insecticides and Fungicides:
PA-based chemicals are used in the formulation of crop protection products, such as synthetic pyrethroids for insect control. In South American soybean farms, these compounds help protect crops from invasive pests while minimizing environmental impact.
Biodegradable Polymers:
As a monomer in biodegradable plastics, PA contributes to the development of eco-friendly packaging materials (e.g., plant-based food containers) that reduce reliance on petroleum-based products.
5. Laboratory and Research Applications
Organic Synthesis:
PA is a versatile reagent in academic and industrial labs for reactions like the Friedel-Crafts acylation, used to synthesize aromatic ketones and dyes. It also facilitates the production of phthalimide, a key intermediate in pharmaceutical and agrochemical research.
Polymer Science:
Used in polymer labs to study the structure-property relationships of polyesters, enabling the development of advanced materials for aerospace and electronics (e.g., heat-resistant coatings for satellites).
Specifications
| Product Name | Phthalic Anhydride | |||||||||
| Chemical Formula | C8H4O3 | |||||||||
| Molecular Weight | 148.12 g/mol | |||||||||
| Appearance | White crystalline powder | |||||||||
| Melting Point | 131.6°C | |||||||||
| Boiling Point | 295°C | |||||||||
| CAS NO | 85-44-9 | |||||||||
| HS Code | 2917359000 | |||||||||
| EINECS NO | 201-607-5 | |||||||||
| Application | Used in plasticizers, resins, pharmaceutical intermediates, dyes, pesticides. | |||||||||
Quality Control Sheet
| Product Name | Phthalic Anhydride | ||||||
| ITEM | SPECIFICATION | RESULT | |||||
| LOT NO. | AA001-GN12241226350 | ||||||
| QUANTITY(MT) | 23.4 | ||||||
| Color (APHA) | MAX 20 | 15 | |||||
| Purty%) | 99.5-100 | 99.9 | |||||
| Soldincation Point(C) | 130.8-131.5 | 130.8 | |||||
| Phthalic Ac1d(WT%) | MAX.0.2 | 0.0294 | |||||
| Heat Hazen(250℃ 90M1n APHA) | MAX 50 | 40 | |||||
| Malcic Anhydnide(GC%) | MAX0.05 | 0 | |||||
In summary
Quality & Compliance
Purity Grades:
Industrial Grade: ≥99.5% purity, suitable for resin and plasticizer production, meeting ISO 9001 standards.
Pharmaceutical Grade: Complies with EP and USP for use in drug intermediates, with heavy metal content ≤10 ppm.
Safety and Sustainability:
Manufactured in ISO 14001-certified facilities using catalytic oxidation of o-xylene, with waste heat recovery systems to reduce carbon footprint.
Packaged in 25 kg bags or 1000 kg totes, labeled with GHS hazard warnings for safe handling and transport (IMDG/ADR compliant).
Why Choose Our Phthalic Anhydride?
Whether you’re producing next-generation composite materials, formulating high-performance coatings, or developing sustainable plastics, our PA delivers consistent reactivity and purity. With global supply hubs in North America, Europe, and Asia, we ensure reliable delivery and technical support for applications ranging from large-scale industrial processes to niche research projects.
Drive innovation with Premium Phthalic Anhydride—the backbone of modern polymer chemistry.