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

Songwon SONGNOX 21B Antioxidant

Songwon SONGNOX 21B is a high-performance hindered phenolic antioxidant from Songwon’s SONGNOX series, widely used in polyolefins and elastomers to prevent thermal-oxidative degradation. It offers excellent processing stability, low volatility, and synergistic effects with phosphites. Compatible with PP, PE, and TPO, it ensures long-term aging resistance while meeting global regulatory requirements including FDA and EU food-contact standards.
  • songwon songnox 21b antioxidant_7422dc11
  • songwon songnox 21b antioxidant_7422dc11

Features Of Songwon SONGNOX 21B Antioxidant

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

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

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

  4. Non-staining and low-color formation, preserving aesthetic quality in light-colored and transparent applications.

  5. Regulatory-compliant for food-contact applications in accordance with FDA 21 CFR §178.2010 and EU Regulation (EC) No 10/2011.

Typical Applications Of Songwon SONGNOX 21B Antioxidant

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

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

  3. Food packaging films and containers made from polyolefin resins.

  4. Household appliances requiring high-heat resistance and color stability.

  5. Blown and cast polyethylene (PE) films for agricultural and industrial use.

Specifications Of Songwon SONGNOX 21B Antioxidant

Chemical TypeHindered phenol
Product FormFree-flowing white to off-white powder
AppearanceWhite to light beige crystalline powder
Melting Point128–132 °C
Assay (by HPLC)≥ 99.0%
Residue on Ignition≤ 0.1%
Heavy Metals (as Pb)≤ 5 ppm
Primary ApplicationsPolyolefins (PP, PE), styrenic polymers, thermoplastic elastomers


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