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Highly effective secondary antioxidant based on tris(2,4-di-tert-butylphenyl) phosphite.
Excellent hydrolytic stability and low volatility, ensuring long-term performance in high-temperature processing.
Superior color retention and minimal impact on polymer clarity, especially in polyolefins and engineering thermoplastics.
Compatible with primary antioxidants (e.g., hindered phenols) for synergistic stabilization systems.
Low migration tendency, supporting compliance with food-contact and medical-grade regulatory requirements.
Polypropylene (PP) fibers and injection-molded parts.
Polyethylene (PE) films, pipes, and rotational molding compounds.
Thermoplastic elastomers (TPEs) requiring thermal and oxidative stability during extrusion.
Engineering plastics including polybutylene terephthalate (PBT) and polyethylene terephthalate (PET).
Recycled polymer streams where enhanced melt stability is critical.
| Chemical Type | Tris(2,4-di-tert-butylphenyl) phosphite |
| Product Form | Free-flowing white to off-white crystalline powder |
| Appearance | Crystalline solid |
| Melting Point | 195–205 °C |
| Assay (by GC) | ≥ 98.0% |
| Moisture Content | ≤ 0.1 wt% |
| Primary Applications | Polyolefins, engineering thermoplastics, recycled resins |
| Key Features | Secondary antioxidant, hydrolytically stable, low-volatility phosphite |
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