Phthalic Anhydride
CAS #:
85-44-9
Phthalic Anhydride is a key aromatic intermediate widely used in the manufacture of plasticizers, unsaturated polyester resins, alkyd resins, and a range of specialty chemicals.
Phthalic Anhydride is a high-volume aromatic anhydride widely used as a core intermediate in the production of plasticizers, unsaturated polyester resins, alkyd resins, and a variety of specialty chemical products. Known for its consistent reactivity, excellent compatibility, and scalable availability, Phthalic Anhydride plays a critical role in improving flexibility, durability, and performance across multiple manufacturing sectors.
General Info & Properties
Molecular Formula: C₈H₄O₃
Appearance: White crystalline flakes or solid
Melting Point: ~131°C
Solubility: Reacts with water; soluble in many organic solvents
Applications
Plasticizers
A primary raw material for producing phthalate and non-phthalate plasticizers that enhance flexibility and workability in PVC and other polymers.
Polyester Resins
Used extensively in fiberglass-reinforced plastics, construction panels, marine components, and automotive composites.
Specialty Chemicals & Intermediates
Serves as a building block for dyes, pigments, pharmaceuticals, agricultural chemicals, and specialty additives.
Adhesives & Sealants
Improves performance characteristics such as adhesion, flexibility, and longevity.
Markets
Agriculture, CASE, Construction, Intermediates, Pharma
Advantages
High Reactivity & Efficiency: Facilitates efficient esterification and condensation reactions, supporting high yields and consistent product quality.
Versatile Industrial Intermediate: Used across plastics, resins, coatings, and specialty chemical manufacturing, reducing sourcing complexity.
Enhances Material Performance: Contributes to improved flexibility, durability, thermal stability, and surface finish in end-use products.
Reliable, Large-Scale Availability: Produced globally at industrial scale, ensuring supply continuity for high-volume manufacturing.
Cost-Effective Solution: Offers excellent performance-to-cost value for a wide range of applications.
Safety & Handling
Phthalic Anhydride should be handled using standard industrial chemical safety practices.
May cause irritation to eyes, skin, and respiratory tract
Dust can be irritating if inhaled
Avoid prolonged exposure