Phthalic Anhydride (PA)
Phthalic Anhydride (PA) is produced through the oxidation of O-xylene and forms white crystal-like flakes at room temperature. When in contact with water, it produces phthalic acid. PA is primarily used in the manufacture of plasticizers, pigments, dyes, and resins. A major consumer of PA is the phthalate plasticiser industry, including DINP, DOP, DBP, etc. PA is also crucial in the production of unsaturated polyester resins (UPR) which, when blended with glass fibers, are used to create fiberglass-reinforced plastics. Additionally, PA-based alkyd resins are widely used in paints and lacquers for applications in architecture, machinery, furniture, and fixtures.
| Item | Unit | Specification | Result | Test Method |
|---|---|---|---|---|
| Appearance | - | WHITE FLAKE | WHITE FLAKE | ASTM D3366 |
| Molten Color | (APHA) | Flake20, Molten15Max | 15 | ASTM D3366 |
| Stability Color | (APHA) | 40 Max | 25 | ASTM D3366 |
| Purity | Wt % | 99.85 min | 99.87 | GC |
| Solidification Point | ”ĘC | 130.99 min | 131 | ASTM D1493 |