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Amfine Chemcial Corporation

AO-20 Product Information

AO-20 is a non-discoloring hindered phenolic antioxidant for the stabilization of polyolefins, styrenic polymers, and elastomers.


• Highly effective processing stabilizer for polyolefins, especially when used with phosphites
• Provides excellent long term thermal stability in polyolefins, especially when used with thioethers
• Non-discoloring under gas fading conditions (NOx)
• Non-interacting with mineral fillers
• Low volatility and good extraction resistance
• Contributes to the light stability of plastics
• FDA cleared for use in polyolefins and adhesives
(Please contact us for additional information)

  AO-20 Chemical Structure


* Automotive PP & TPO compounds, both mineral-filled and unfilled
* PP fibers, films, and tapes
* PE injection, rotational, and blow molding
* Styrenic polymers (ABS)

Typical Properties

Appearance: White Powder
Melting Range: 220-222ºC

CAS Number


Additional Information (registered users)

Product Data Sheet
Safety Data Sheet