Irganox 565 (CAS 991-84-4) Comprehensive User Guide
Table of Contents
- Product Specifications & Comparative Analysis
- Applications & Functional Advantages
- Operational Best Practices
- Industry-Specific Use Cases
- Client Success Stories
- Procurement & Technical Consultation
1. Product Specifications & Comparative Analysis
| Parameter | Irganox 565 | Conventional Antioxidants |
|---|---|---|
| CAS Number | 991-84-4 | Varies by type |
| Molecular Formula | C33H56N4OS2 | Typically simpler structures |
| Molecular Weight | 588.95 g/mol | 200-400 g/mol |
| Physical Form | White crystalline powder | Liquid/powder variants |
| Density | 1.07 g/cm³ | 0.9-1.2 g/cm³ |
| Thermal Stability | Up to 300°C | 200-250°C |
2. Applications & Functional Advantages
Core Applications:
- Elastomer stabilization in automotive seals/gaskets
- Polymer processing aids for engineering plastics (PA, ABS)
- Rubber anti-aging formulations
- High-temperature lubricant additives
Performance Benefits:
- Superior melt flow stability during injection molding
- Halts oxidative chain reactions in unsaturated polymers
- Non-discoloring at recommended dosages (0.1-0.5% wt)
- Synergistic effects with thioester co-stabilizers
3. Operational Best Practices
Dosage Guidelines:
- Thermoplastics: 0.05-0.3% by weight
- Elastomers: 0.2-1.0% by weight
- Masterbatch: Up to 5.0% concentration
Processing Recommendations:
- Premix with polymer pellets before extrusion
- Optimize screw speed to ensure dispersion ≤50μm
- Post-processing thermal treatment at 80-100°C
4. Industry-Specific Use Cases
Automotive Manufacturing:
- Extended lifespan of engine compartment components
- Reduced VOC emissions in cabin materials
Wire & Cable Production:
- Maintained dielectric properties under thermal stress
- Compliance with IEC 60811-401 aging tests
5. Client Success Stories
Case Study 1: European Automotive Supplier
- Challenge: Premature cracking in EPDM window seals
- Solution: 0.4% Irganox 565 in sulfur-cured system
- Result: 60% improvement in compression set resistance
Case Study 2: Asian Polymer Compounder
- Challenge: Discoloration in transparent TPU films
- Solution: 0.15% Irganox 565 with UV326 synergist
- Result: ΔYI < 2 after 1,000 hrs QUV exposure
6. Procurement & Technical Consultation
For formulation support or bulk pricing:
- Email: info@vivalr.com
- Tel: (86) 15866781826



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