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

SI Group AT-733 Antioxidant

SI Group AT-733 Antioxidant is a high-performance hindered phenolic antioxidant from SI Group’s AT-series, designed for polyolefins and elastomers. It delivers exceptional thermal stability, low volatility, and excellent compatibility. Widely used in PP, PE, and TPE applications to prevent oxidative degradation during processing and long-term service life. Meets FDA and EU food-contact requirements.
  • si group at 733 antioxidant_7e37cb6d
  • si group at 733 antioxidant_7e37cb6d

Features Of SI Group AT-733 Antioxidant

  1. High-performance hindered phenolic antioxidant offering excellent thermal and oxidative stability.

  2. Low volatility and superior migration resistance for long-term polymer protection.

  3. Compatible with a broad range of thermoplastics, elastomers, and engineering resins.

  4. Non-staining and low-color formation—ideal for light-colored and transparent applications.

  5. Meets stringent regulatory requirements including FDA 21 CFR §178.2010 for food-contact polymers.

Typical Applications Of SI Group AT-733 Antioxidant

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

  2. Polyethylene (PE) films used in packaging and agricultural applications.

  3. Thermoplastic elastomers (TPEs) in automotive interior components.

  4. Engineering plastics such as polybutylene terephthalate (PBT) and polyamide (PA).

  5. Recycled polymer streams requiring robust stabilization against processing degradation.

Specifications Of SI Group AT-733 Antioxidant

Chemical TypeHindered phenol
Product FormFree-flowing white to off-white crystalline powder
AppearanceCrystalline solid, free of visible impurities
Melting Point168–172 °C
Assay (by HPLC)≥ 99.0%
Volatile Matter (105 °C, 2 h)≤ 0.3%
Heavy Metals (as Pb)≤ 10 ppm
Primary ApplicationsPolyolefins, TPEs, engineering thermoplastics


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *