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

ADK Stab AO-503 Antioxidant

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 superior long-term oxidation resistance. Compatible with peroxide-cured systems, it prevents polymer degradation during processing and service life while maintaining mechanical properties and color stability.
  • adk stab ao 503 antioxidant_6a2a61fa
  • adk stab ao 503 antioxidant_6a2a61fa

Features Of ADK Stab AO-503 Antioxidant

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

  2. Low volatility and minimal migration, ensuring consistent protection in demanding processing conditions.

  3. Compatible with a broad range of polymers including polyolefins, styrenics, and engineering plastics.

  4. Non-discoloring formulation suitable for applications requiring high color stability and clarity.

  5. Meets major food-contact regulatory requirements (e.g., FDA 21 CFR §178.2010 and EU Regulation No. 10/2011).

Typical Applications Of ADK Stab AO-503 Antioxidant

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

  2. Automotive interior components such as dashboards, door panels, and trim parts.

  3. Food packaging films and containers made from polyethylene (PE) and polypropylene (PP).

  4. Electrical and electronic housings requiring UL94-compliant flame-retardant formulations.

  5. Blown and cast films for agricultural mulch and greenhouse covers.

Specifications Of ADK Stab AO-503 Antioxidant

Chemical TypeHindered phenol
Product FormFree-flowing white to off-white powder
AppearanceFree-flowing granular solid
Melting Point120–125 °C (determined by DSC)
Assay (by HPLC)≥ 99.0%
Residue on Ignition≤ 0.1%
Heavy Metals (as Pb)≤ 5 ppm
Primary ApplicationsPolyolefins, styrenic resins, thermoplastic elastomers


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