Chemical Product Library / Reference
Isophthalic acid
Chemical identity, technical indicators, performance and application reference. Confirm specifications and regulatory suitability against supplier documentation.
Chemical identity
| English name | Isophthalic acid |
|---|---|
| English synonyms | PIA;Isophthalic acid;1,3-Benzenedicarboxylic acid |
| Chinese name | 间苯二甲酸 |
| Chinese synonyms | PIA;1,3-苯二甲酸;异酞酸 |
| Chemical category | Organic Acids |
| CAS No. | 121-91-5 |
| EINECS No. | 204-506-4 |
| 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 ≥99.0%; water ≤0.1%; ash ≤0.01%; color (Pt-Co) ≤20
Performance characteristics
White crystalline powder, sparingly soluble in water
Application scenarios
Unsaturated polyester resin, PET copolymer, coating resin, plasticizer