Diisodecyl Phenyl Phosphite (CAS 25550-98-5) Comprehensive User Guide
Table of Contents
1. Product Overview & Specifications
| Parameter | Diisodecyl Phenyl Phosphite | Conventional Antioxidants |
|---|---|---|
| CAS Number | 25550-98-5 | Varies |
| Molecular Formula | C26H47O3P | Typically simpler structures |
| Boiling Point | 469.4°C at 760mmHg | 200-400°C |
| Flash Point | 296.3°C | 150-250°C |
| Refractive Index | n20/D 1.48 | 1.45-1.55 |
Safety Data: H303 (Harmful if swallowed), H315 (Skin irritation), H320 (Eye irritation). Use PPE including gloves and eye protection.
2. Key Applications
Polymer Stabilization
Acts as a highly effective secondary antioxidant in:
- PVC processing (reduces color degradation)
- Polyolefin films (extends UV resistance)
- Engineering plastics (maintains mechanical properties)
Synergistic Formulations
Enhances performance when combined with:
- Phenolic antioxidants (BHT, Irganox系列)
- Thioester costabilizers
Specialized Uses
- Medical device polymers (low toxicity profile)
- High-temperature lubricant additives
3. Operational Protocols
Recommended Dosage
| Application | Concentration Range | Optimal Temperature |
|---|---|---|
| PVC Stabilization | 0.3-0.8% w/w | 160-180°C |
| Polyolefin Protection | 0.2-0.5% w/w | 200-220°C |
Processing Notes
- Pre-dry polymers containing hygroscopic fillers
- Optimize shear mixing for uniform distribution
- Avoid contact with strong oxidizers during storage
4. Implementation Case Studies
Automotive Interior Components
Challenge: Prevent dashboard plastic degradation under prolonged UV exposure.
Solution: 0.6% additive incorporation extended service life by 40%.
Medical Tubing Production
Challenge: Meet ISO 10993 biocompatibility requirements.
Solution: Replaced traditional stabilizers with Diisodecyl Phenyl Phosphite, achieving Class VI certification.
5. Verified Client Implementations
Case 1: European Polymer Manufacturer
- Industry: High-performance engineering plastics
- Result: 22% reduction in production downtime
- Application: PBT compounds for electrical connectors
Case 2: Asian Packaging Specialist
- Market: Flexible food packaging films
- Achievement: Extended shelf life by 6 months
- Technical Benefit: Maintained clarity under sterilization
6. Technical Support & Inquiry
For formulation assistance or bulk pricing:
Email: info@vivalr.com
Tel: (86) 15866781826 (Technical Support Hotline)
Request SDS or customized technical documentation through our 24/7 response system.



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