3-Hydroxyphthalic Anhydride (CAS 37418-88-5): Comprehensive Product Guide
Table of Contents
1. Product Overview & Technical Specifications
| Parameter | 3-Hydroxyphthalic Anhydride | Standard Phthalic Anhydride |
|---|---|---|
| CAS Number | 37418-88-5 | 85-44-9 |
| Molecular Formula | C8H4O4 | C8H4O3 |
| Purity | ≥99.5% | ≥99.0% |
| Melting Point | 131-134°C | 131°C |
Key Differentiators: Enhanced solubility in polar solvents, improved thermal stability (up to 280°C), and higher reactivity in esterification processes compared to standard phthalic anhydride derivatives.
2. Industrial Applications & Functional Benefits
2.1 Polymer Chemistry
Preferred monomer for:
- High-performance polyimide resins
- Flame-retardant epoxy curing agents
- UV-resistant coating formulations
2.2 Pharmaceutical Intermediates
Critical precursor for:
- Antimicrobial quinolone derivatives
- Non-steroidal anti-inflammatory drugs (NSAIDs)
- Controlled-release drug delivery systems
3. Operational Implementation Examples
3.1 Coatings Manufacturing
Challenge: Developing marine coatings with 10+ year salt spray resistance
Solution: 0.8-1.2% additive in alkyd resin formulations improves crosslink density by 40%
3.2 Electronic Materials
Challenge: Reducing dielectric loss in 5G circuit boards
Solution: 15-18% incorporation in polyimide substrates achieves Dk 2.8 @ 10 GHz
4. Verified Customer Implementations
Case 1: Specialty Polymers Manufacturer (Germany)
Application: High-Tg thermoset composites for aerospace
Results: Achieved Tg increase from 210°C to 275°C with 12% loadings
Case 2: Pharmaceutical Company (India)
Application: Ciprofloxacin intermediate synthesis
Results: Reduced reaction steps from 5 to 3, yield improvement from 68% to 82%
5. Technical Support & Custom Formulations
Our chemical engineers provide:
- Batch-specific COA documentation
- Reactivity profile simulations
- Regulatory compliance guidance
Contact our technical team:
Email: info@vivalr.com
Tel: (86) 15866781826
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