Phthalic Anhydride (PA)
Technical Data
| Chemical Structure |  |
| Molecular Formula | C8H4O3 |
| Molecular Weight | 148.12 g/mole |
| CAS No. | 85-44-9 |
| Purity | ≥99.5% |
| Fused Chroma | ≤20 |
| Chroma of Therma Stability | ≤50 |
| Chroma of Sulphuric Acid | ≤40 |
| Free Acid (mass fraction) | ≤0.2% |
Application
It is used for manufacture of plasticizer(DOP,DINP,DIDP,etc), alkyd resin, unsaturated polyester resin, pigment, and other chemicals.