Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

SI Group AT-816 Antioxidant

SI Group AT-816 Antioxidant is a high-performance hindered phenolic antioxidant from SI Group’s AT-series, designed for polyolefins and elastomers. It offers exceptional thermal stability, low volatility, and synergistic compatibility with phosphites. Widely used in PP, PE, and TPE applications, it ensures long-term polymer protection during processing and end-use.
  • si group at 816 antioxidant_5680a5a7
  • si group at 816 antioxidant_5680a5a7

Features Of SI Group AT-816 Antioxidant

  1. High-performance hindered phenolic antioxidant offering exceptional thermal and oxidative stability.

  2. Low volatility and excellent compatibility with polyolefins, elastomers, and engineering thermoplastics.

  3. Non-staining and low migration, supporting long-term color and mechanical property retention.

  4. Easy to disperse in polymer melts; suitable for high-output extrusion and injection molding processes.

  5. REACH-compliant and listed on major regulatory inventories including TSCA and AICS.

Typical Applications Of SI Group AT-816 Antioxidant

  1. Polypropylene (PP) fibers and nonwovens for hygiene and medical applications.

  2. Polyethylene (PE) films used in packaging, agricultural mulch, and geomembranes.

  3. Thermoplastic elastomers (TPEs) in automotive interior components and consumer goods.

  4. Recycled polyolefin compounds requiring robust stabilization against processing degradation.

  5. Engineering plastics such as polybutylene terephthalate (PBT) and polyamide (PA) blends.

Specifications Of SI Group AT-816 Antioxidant

Chemical TypeHindered phenol
Product FormFree-flowing white to off-white powder
AppearanceFree-flowing crystalline powder
Primary ApplicationsPolyolefins, TPEs, engineering thermoplastics
Key FeaturesThermal stability, low volatility, non-staining
BenefitsExtended polymer service life, reduced discoloration, improved melt stability
Regulatory StatusREACH registered, TSCA listed, AICS approved
Storage RecommendationStore in cool, dry place below 30°C in original sealed packaging


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