PRODUCT DATA SHEET (TDS)
1. Product Identification
| Item | Details |
| Product Name | Phthalic Anhydride (PA) |
| Chemical Formula | C₈H₄O₃ |
| Molecular Weight | 148.12 g/mol |
| CAS No. | 85-44-9 |
| Appearance | White flake or crystalline powder |
2. Typical Specifications (1st Grade, GB/T 15336-2013)
| Analysis Item | Unit | Specification | Typical Test Result |
| Appearance | – | White flake or crystalline powder | White flake |
| Molten Color (Hazen) | – | ≤ 50 | 15 |
| Heat Stable Color (Hazen) | – | ≤ 150 | 30 |
| Purity (Mass Fraction) | % | ≥ 99.50 | 99.99 |
| Free Acid (Mass Fraction) | % | ≤ 0.30 | 0.03 |
| Crystallization Point | °C | ≥ 130.3 | — |
| Sulfuric Acid Color (Hazen) | – | ≤ 100 | 20 |
| Maleic Anhydride Content | % | Not detected | Not detected |
3. Physical & Chemical Properties
| Item | Details |
| Appearance | White flake or crystalline powder |
| Melting Point | ~131 °C |
| Boiling Point | ~284 °C (at 101.3 kPa) |
| Solubility | Slightly soluble in water; soluble in ethanol, benzene, and most organic solvents |
| Stability | Stable under normal conditions; avoid contact with strong oxidizers and strong bases |
4. Applications
- Primary raw material for the production of plasticizers (e.g., DOP, DOTP, DINP)
- Intermediate for polyester resins, alkyd resins, and unsaturated polyester resins
- Key component in the manufacturing of dyes, pigments, and pharmaceutical intermediates
- Used in the production of surfactants, pesticides, and synthetic fibers
5. Packaging
- Packaging Type: 25 kg woven bags or 500 kg/1000 kg bulk bags
- Handling Notes: Keep containers tightly closed; store in a cool, dry, well-ventilated area away from moisture and incompatible materials.
6. Storage
- Store in a cool, dry, and well-ventilated warehouse.
- Protect from direct sunlight, heat, moisture, and incompatible materials (strong oxidizers, strong bases).
- Shelf Life: 12 months under proper storage conditions.
7. Safety & Handling
- Hazard Classification: Irritating to skin, eyes, and respiratory tract; may cause allergic reactions.
- Recommended PPE: Safety goggles, chemical-resistant gloves, and protective clothing when handling.
- Use in well-ventilated areas; avoid inhalation of dust and contact with skin/eyes.
- For complete safety instructions, refer to the product SDS (Safety Data Sheet).
