Highly effective phosphite-based secondary antioxidant with exceptional hydrolytic stability.
Excellent compatibility with polyolefins, including PP and HDPE, without blooming or migration issues.
Acts synergistically with primary antioxidants (e.g., hindered phenols) to enhance long-term thermal stability.
Low volatility ensures retention during high-temperature processing such as extrusion and injection molding.
Non-staining and colorless—ideal for applications requiring optical clarity and minimal discoloration.
Polypropylene (PP) fibers and nonwovens for automotive and hygiene applications.
HDPE and LDPE packaging films, including food-contact and heavy-duty sacks.
Automotive interior parts exposed to elevated under-hood temperatures.
Medical-grade polyolefin components processed via steam sterilization or gamma irradiation.
Rotomolded tanks and large industrial containers requiring long-term UV and thermal resistance.
| Chemical Type | Tris(2,4-di-tert-butylphenyl) phosphite |
| Product Form | White crystalline powder |
| Appearance | Free-flowing, odorless granules or fine powder |
| Melting Point | 178–182 °C |
| Assay (by HPLC) | ≥ 99.0% |
| Primary Applications | Polyolefins (PP, PE), engineering plastics, adhesives, and elastomers |
| Key Features | Secondary antioxidant, hydrolysis-resistant, low volatility, non-staining |
| Benefits | Extended processing stability, improved melt flow, reduced gel formation, enhanced long-term aging performance |
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China