Table of Contents
- Product Overview
- Parameter Comparison
- Detailed Applications
- Usage Guidelines
- Client Case Studies
- Contact for Quotation
Isophthalic Acid (CAS 121-91-5) Overview
Basic Specifications
| Parameter | Value |
|---|---|
| CAS Number | 121-91-5 |
| Molecular Formula | C8H6O4 |
| Molecular Weight | 166.13 g/mol |
| Appearance | White crystalline powder |
| Purity | ≥99.5% |
| Melting Point | 345-348°C |
| Density | 1.526 g/cm³ |
Comparative Analysis with Similar Compounds
| Property | Isophthalic Acid | Terephthalic Acid | Phthalic Anhydride |
|---|---|---|---|
| Solubility in Water | 0.01 g/100ml | 0.0017 g/100ml | Reacts |
| Thermal Stability | Excellent | Superior | Moderate |
| Primary Application | Corrosion-resistant resins | PET production | Plasticizers |
Industrial Applications
Polymer Manufacturing
Used as co-monomer in production of:
– High-performance PET resins
– Alkyd resins for marine coatings
– Glass-reinforced plastics (FRP)
Advanced Material Synthesis
Critical component in:
– Liquid crystal polymers (LCP)
– Fire-retardant materials
– Aerospace composites
Operational Best Practices
Storage Requirements
– Maintain at 15-25°C in dry environment
– Shelf life: 24 months in original packaging
Safety Protocols
– Use NIOSH-approved respirators when handling powder
– Emergency eyewash stations required in processing areas
Client Success Stories
Case 1: Polymer Solutions Inc. (USA)
Challenge: Required high-heat resistance for automotive components
Solution: 15% IPA incorporation in PBT formulations
Outcome: Achieved continuous operation at 180°C
Case 2: MarineCoat Ltd. (Germany)
Challenge: Saltwater corrosion in shipbuilding materials
Solution: IPA-modified vinyl ester resins
Result: 40% improvement in corrosion resistance
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