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

Clariant Hostanox P-EPQ Antioxidant

Clariant Hostanox P-EPQ is a high-performance phosphite antioxidant from the Hostanox series, designed for polyolefins and engineering plastics. It offers exceptional melt stabilization, hydrolytic stability, and synergistic effects with hindered phenols. Widely used in PP, PE, and TPO applications, it ensures processing safety and long-term thermal aging resistance.
  • clariant hostanox p epq antioxidant_9b1b29c1
  • clariant hostanox p epq antioxidant_9b1b29c1

Features Of Clariant Hostanox P-EPQ Antioxidant

  1. High-performance phosphite-based antioxidant offering exceptional melt stabilization during high-temperature polymer processing.

  2. Excellent hydrolytic stability, ensuring consistent performance in moisture-sensitive applications and extended shelf life.

  3. Synergistic with phenolic antioxidants—enhances overall oxidative resistance without compromising color or clarity.

  4. Low volatility and minimal plate-out, supporting clean operation in extrusion and injection molding equipment.

  5. REACH-compliant and listed on major regulatory inventories including TSCA and AICS.

Typical Applications Of Clariant Hostanox P-EPQ Antioxidant

  1. Polyolefins (PP, HDPE, LDPE) for automotive interior parts and under-hood components.

  2. Thin-walled packaging films requiring long-term thermal and UV stability.

  3. Fiber and nonwoven applications exposed to high draw temperatures and prolonged heat history.

  4. Engineering plastics blends (e.g., PP/EPDM, PP/PA) where processing stability and end-use durability are critical.

  5. Recycled polyolefin formulations needing robust stabilization against thermo-oxidative degradation.

Specifications Of Clariant Hostanox P-EPQ Antioxidant

Chemical TypeTris(2,4-di-tert-butylphenyl) phosphite
Product FormFree-flowing white to off-white crystalline powder
AppearanceCrystalline solid, free of visible impurities
Primary ApplicationsMelt stabilization of polyolefins and engineering thermoplastics
Key FeaturesPhosphite antioxidant, low volatility, hydrolysis-resistant
BenefitsReduces gel formation, prevents discoloration, improves mechanical retention
Storage ConditionsStore in cool, dry place below 30°C; protect from moisture and direct sunlight
Regulatory StatusComplies with EU Regulation (EC) No 10/2011 for food-contact plastics (subject to migration limits)


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