Highly effective secondary antioxidant based on tris(2,4-di-tert-butylphenyl) phosphite.
Excellent hydrolytic stability and low volatility for long-term thermal protection.
Superior compatibility with polyolefins, engineering thermoplastics, and elastomers.
Minimizes color formation during processing and end-use aging.
Non-staining and non-migrating—ideal for demanding appearance-critical applications.
Polypropylene (PP) fibers and nonwovens for medical and hygiene products.
Polyethylene (PE) blow-molded containers and HDPE pipes.
Automotive interior components including PP dashboards and trim parts.
Food-contact packaging films requiring FDA-compliant stabilization.
Recycled polyolefin compounds where processing stability is critical.
| Chemical Type | Organophosphite secondary antioxidant |
| Product Form | Free-flowing white to off-white crystalline powder |
| Appearance | Crystalline solid, free from visible impurities |
| Melting Point | 195–205 °C (determined by DSC) |
| Assay (by HPLC) | ≥ 99.0% |
| Loss on Drying | ≤ 0.3% at 105 °C, 2 hours |
| Solubility | Freely soluble in chloroform, toluene, and xylene; insoluble in water |
| Primary Applications | Polyolefins, engineering plastics, elastomers, and recycled resins |
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E-mail: wangxingqiang@ericwchem.com
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