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

ADEKA ADK STAB AO-503 Antioxidant

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 superior long-term oxidation resistance. Widely used in PP, PE, and ABS, it ensures processing safety and extends product service life without discoloration or odor issues.
  • adeka adk stab ao 503 antioxidant_e12b4717
  • adeka adk stab ao 503 antioxidant_e12b4717

Features Of ADEKA ADK STAB AO-503 Antioxidant

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

  4. Non-staining and low-color formation, ideal for applications requiring high aesthetic clarity or light color retention.

  5. Regulatory compliant with major global food-contact and toy-safety standards (e.g., FDA 21 CFR, EU Directive 2002/72/EC).

Typical Applications Of ADEKA ADK STAB AO-503 Antioxidant

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

  2. Automotive interior components such as dashboards, door trims, and air ducts.

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

  4. Household appliances housings and durable consumer goods requiring UV and heat resistance.

Specifications Of ADEKA ADK STAB AO-503 Antioxidant

Chemical TypeHindered phenol
Product FormFree-flowing white to off-white powder
AppearanceWhite crystalline powder
Melting Point120–125 °C (determined by DSC)
Assay (by HPLC)≥ 99.0%
Residue on Ignition≤ 0.1%
Primary ApplicationsPolyolefins, styrenic resins, engineering thermoplastics
Key FeaturesThermal stability, low volatility, polymer compatibility, regulatory compliance


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