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

BASF Irgafos 168 Antioxidant

BASF Irgafos 168 Antioxidant is a highly effective phosphite-based stabilizer in the Irgafos series, widely used for polyolefins and engineering plastics. It prevents thermal oxidative degradation during processing and long-term use, offering excellent hydrolytic stability and low volatility. Compatible with other antioxidants like hindered phenols, it enhances polymer performance without discoloration or odor issues.
  • basf irgafos 168 antioxidant_c7b089f2
  • basf irgafos 168 antioxidant_c7b089f2

Features Of BASF Irgafos 168 Antioxidant

  1. Highly effective phosphite-based secondary antioxidant with exceptional hydrolytic stability.

  2. Excellent compatibility with polyolefins, including PP and HDPE, without blooming or migration issues.

  3. Acts synergistically with primary antioxidants (e.g., hindered phenols) to enhance long-term thermal stability.

  4. Low volatility ensures retention during high-temperature processing such as extrusion and injection molding.

  5. Non-staining and colorless—ideal for applications requiring optical clarity and minimal discoloration.

Typical Applications Of BASF Irgafos 168 Antioxidant

  1. Polypropylene (PP) fibers and nonwovens for automotive and hygiene applications.

  2. HDPE and LDPE packaging films, including food-contact and heavy-duty sacks.

  3. Automotive interior parts exposed to elevated under-hood temperatures.

  4. Medical-grade polyolefin components processed via steam sterilization or gamma irradiation.

  5. Rotomolded tanks and large industrial containers requiring long-term UV and thermal resistance.

Specifications Of BASF Irgafos 168 Antioxidant

Chemical TypeTris(2,4-di-tert-butylphenyl) phosphite
Product FormWhite crystalline powder
AppearanceFree-flowing, odorless granules or fine powder
Melting Point178–182 °C
Assay (by HPLC)≥ 99.0%
Primary ApplicationsPolyolefins (PP, PE), engineering plastics, adhesives, and elastomers
Key FeaturesSecondary antioxidant, hydrolysis-resistant, low volatility, non-staining
BenefitsExtended processing stability, improved melt flow, reduced gel formation, enhanced long-term aging performance


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