Chemical Product Library / Reference
Terephthalic acid
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Terephthalic acid |
|---|---|
| English synonyms | PTA;Terephthalic acid;1,4-Benzenedicarboxylic acid |
| Chinese name | 对苯二甲酸 |
| Chinese synonyms | PTA;精对苯二甲酸;1,4-苯二甲酸 |
| Chemical category | Organic Acids |
| CAS No. | 100-21-0 |
| EINECS No. | 202-830-0 |
| Molecular formula | C8H6O4 |
| Molecular weight | 166.13 |
PubChem structure images are reference depictions, not proof of composition, purity, grade, or regulatory status. Mixtures and polymers may not have a single representative structure.
Technical indicators
Purity ≥99.5%; water ≤0.1%; 4-carboxybenzaldehyde ≤25 ppm; ash ≤0.01%
Performance characteristics
White crystalline powder, sparingly soluble in water, soluble in alkali
Application scenarios
PET resin and fiber production, PBT, plasticizer, chemical synthesis