4-Phenylethynylphthalic Anhydride (CAS 119389-05-8): Comprehensive User Guide

1. Product Overview & Technical Specifications

Chemical Profile

IUPAC Name: 4-(Phenylethynyl)phthalic anhydride
CAS No.: 119389-05-8
Molecular Formula: C₁₆H₈O₃
Purity: ≥98% (HPLC)
Appearance: Off-white to pale yellow crystalline powder

Comparative Analysis

2. Key Applications & Industry Use Cases

Primary Applications

• High-Performance Polymers: Cross-linking agent for polyimide synthesis
• Electronic Encapsulants: Thermal stabilization in semiconductor packaging
• Aerospace Composites: Matrix modifier for carbon fiber reinforcement

Technical Implementation

In polyimide film production:
1. Dissolve in NMP at 60°C (1:4 ratio)
2. React with diamine monomers under nitrogen
3. Cure at 250°C for 2 hours

3. Operational Guidelines & Best Practices

Storage Protocol

• Store in airtight containers at -20°C
• Desiccate with silica gel
• Shelf life: 24 months unopened

Safety Measures

• Use NIOSH-approved respirators
• Chemical-resistant gloves (Butyl rubber)
• Emergency eyewash stations required

4. Real-World Client Success Stories

Case Study 1: Advanced Electronics Manufacturer

Client: Shenzhen Hi-Tech Materials Co., Ltd. (China)
Challenge: Thermal degradation in flexible circuits
Solution: 0.5% additive in polyimide matrix
Result: 40% improvement in thermal cycling performance

Case Study 2: Aerospace Composite Supplier

Client: AeroShield Technologies (USA)
Challenge: Delamination at high altitudes
Solution: Surface functionalization of carbon fibers
Result: 25% weight reduction with maintained integrity

5. Technical Support & Inquiry