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

SI Group AT-900 Antioxidant

SI Group AT-900 Antioxidant is a high-performance hindered phenolic antioxidant from SI Group’s AT-series, designed for polyolefins and elastomers. It delivers exceptional thermal stability, low volatility, and excellent processing safety. Compatible with peroxide-cured systems, it prevents oxidative degradation during manufacturing and end-use. Widely used in automotive, cable, and industrial rubber applications.
  • si group at 900 antioxidant_fb6504ef
  • si group at 900 antioxidant_fb6504ef

Features Of SI Group AT-900 Antioxidant

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

  2. Low volatility and high melt stability, ideal for high-temperature polymer processing.

  3. Excellent compatibility with polyolefins, including PP, HDPE, and LDPE.

  4. Non-staining and low odor—suitable for applications requiring stringent sensory performance.

  5. Regulatory compliant with FDA 21 CFR §178.2010 and EU Directive 10/2011 for food-contact plastics.

Typical Applications Of SI Group AT-900 Antioxidant

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

  2. Automotive interior components, including dashboards and trim parts.

  3. Food packaging films and rigid containers made from polyolefins.

  4. Rotomolded tanks and industrial containers exposed to prolonged heat and UV.

  5. Electrical insulation materials requiring long-term aging resistance.

Specifications Of SI Group AT-900 Antioxidant

Chemical TypeHindered phenol
Product FormFree-flowing white to off-white powder
AppearanceFree-flowing crystalline powder
Melting Point165–170 °C (determined by DSC)
Assay (by HPLC)≥ 99.0%
Volatile Matter (105 °C, 2 h)≤ 0.3%
Ash Content≤ 0.05%
Primary ApplicationsPolyolefins, especially PP and PE in demanding thermal environments


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