TEREPHTHALIC ACID
CAS: 100-21-0
Category: Carboxylic Acids
| Purity | Industrial Grade ≥99.0%, Polyester Grade ≥99.5%, High-Purity Grade ≥99.8% |
| Molecular Formula | C8H6O4 |
| Molecular Weight | 166.13 |
| Appearance | White crystalline powder or flakes, odorless, with high melting point and good chemical stability |
| Packaging | 25 kg woven bags with PE inner liner, 500 kg or 1000 kg jumbo bags, or customized industrial bulk packaging |
| Testing Indicators | Appearance — Visual inspection; Identification — FTIR spectroscopy (aromatic carboxylic acid characteristic peaks); Purity — HPLC or GC analysis; Assay — Acid-base titration (ASTM D1209/D3505); Moisture content — Karl Fischer titration (ASTM E203); Ash content — Gravimetric analysis (ASTM D482); Color — APHA/Hazen color measurement (ASTM D1209); Melting point — Differential scanning calorimetry (DSC) or capillary method; Heavy metals — ICP-OES analysis. |
| Storage Notes | Store in a cool, dry, and well-ventilated warehouse away from moisture and direct sunlight. Keep containers tightly closed to prevent contamination and moisture absorption. Avoid storage with strong oxidizing agents, strong acids, and strong bases. Handle carefully to prevent dust generation. Use appropriate personal protective equipment during handling. |
| Lead Time | 10 days |
Primarily used as a key raw material for the production of polyethylene terephthalate (PET) resins, polyester fibers, polyester films, and engineering plastics. Also used in the manufacture of coatings, plasticizers, liquid crystal polymers, and specialty polyester materials. It serves as an important intermediate in the textile, packaging, automotive, and electronics industries.