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

ADEKA ADK STAB AO-503 Antioxidants

ADEKA ADK STAB AO-503 is a high-performance hindered phenolic antioxidant from ADEKA’s ADK STAB series, designed for polyolefins and engineering plastics. It offers excellent thermal stability, low volatility, and synergistic effects with phosphites. Widely used in PP, PE, and TPO applications requiring long-term oxidative resistance and color retention.
  • adeka adk stab ao 503 antioxidants_0979ff6a
  • adeka adk stab ao 503 antioxidants_0979ff6a

Features Of ADEKA ADK STAB AO-503 Antioxidants

  1. High-performance hindered phenolic antioxidant offering excellent long-term thermal stability.

  2. Low volatility and superior migration resistance, ensuring sustained protection during processing and service life.

  3. Excellent compatibility with polyolefins, engineering plastics, and elastomers.

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

  5. Synergistic with phosphites and thioesters, enabling optimized stabilization packages.

Typical Applications Of ADEKA ADK STAB AO-503 Antioxidants

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

  2. Automotive interior components including PP and TPO trim parts.

  3. Food-contact polyolefin packaging films and containers.

  4. Rotomolded polyethylene (PE) tanks and industrial containers.

  5. Wire & cable insulation compounds based on cross-linked polyethylene (XLPE).

Specifications Of ADEKA ADK STAB AO-503 Antioxidants

Chemical TypeHindered phenol
Product FormPellets
AppearanceWhite to off-white free-flowing pellets
Melting Point115–125 °C
Assay (by HPLC)≥ 98.0%
Volatile Matter (105 °C, 2 h)≤ 0.3%
Ash Content≤ 0.05%
Primary ApplicationsPolyolefins (PP, PE), TPOs, elastomers


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