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

ADEKA ADK STAB 2112 Phosphite Antioxidant

ADEKA ADK STAB 2112 is a high-performance phosphite antioxidant from ADEKA’s ADK STAB series, designed for polyolefins and engineering plastics. It offers exceptional melt stability, hydrolytic resistance, and synergistic effects with hindered phenols. Widely used in PP, PE, and TPO applications requiring long-term thermal aging resistance and low volatility.
  • adeka adk stab 2112 phosphite antioxidant_ccae47e1
  • adeka adk stab 2112 phosphite antioxidant_ccae47e1

Features Of ADEKA ADK STAB 2112 Phosphite Antioxidant

  1. Highly effective secondary antioxidant that hydrolyzes and decomposes hydroperoxides without generating acidic by-products.

  2. Excellent thermal stability suitable for high-temperature polymer processing, including injection molding and extrusion.

  3. Low volatility and minimal migration, ensuring long-term stabilization performance in demanding applications.

  4. Compatible with primary antioxidants (e.g., hindered phenols) and other additives commonly used in polyolefin formulations.

  5. Non-staining and non-discoloring—preserves clarity and color integrity in transparent or light-colored polymers.

Typical Applications Of ADEKA ADK STAB 2112 Phosphite Antioxidant

  1. Polypropylene (PP) homopolymers and copolymers for automotive interior parts and durable goods.

  2. Polyethylene (PE), including HDPE and LLDPE, used in blow-molded containers and rotational molding.

  3. Thermoplastic elastomers (TPEs) requiring high melt stability and low extractables.

  4. Fibers and monofilaments where long-term oxidative resistance during heat-setting is critical.

  5. Recycled polyolefin blends, where enhanced stabilization compensates for polymer degradation history.

Specifications Of ADEKA ADK STAB 2112 Phosphite Antioxidant

Chemical TypeTris(2,4-di-tert-butylphenyl) phosphite
Product FormFree-flowing white to off-white crystalline powder
AppearanceWhite to pale yellow crystalline solid
Melting Point190–195 °C (by DSC)
Assay (by HPLC)≥ 99.0%
Residue on Ignition≤ 0.1%
Heavy Metals (as Pb)≤ 10 ppm
Primary ApplicationsPolyolefins, TPEs, fibers, recycled polymer systems


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