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Synergistic blend of phenolic and phosphite antioxidants to protect polymers both during processing and long term aging.




Product Overview

ANOX™ BB021 Powder is a solid, synergistic blend of one part phenolic (ANOX® 20) to two parts phosphite (ALKANOX® 240) antioxidants. This binary blend provides excellent protection for polymers during both processing and long term aging.

Product Specifications

Appearance: White to off-white powder
ALKANOX™ 240 Content: 64.2-69.2%
ANOX™ 20 Content: 30.8-35.8%
Clarity of Sol (10% w/v Toluene): Clear
Tran. 425 nm (10% w/v Toluene): ≥95.0
Tran. 500 nm (10% w/v Toluene): ≥97.0
Primary Chemistry: Blend of Phenolic and Phosphite Antioxidants

Features & Benefits

Fewer additives to dose properly
Low volatility allows for higher processing temperatures
Excellent resistance to extraction from polymer compounds
Available in powder and granular forms


Used in a wide variety of thermoplastic polymers such as polyolefins, polycarbonates, ABS, and polyesters

Related Products

SI Group Main Antioxidants

SI Group Main Antioxidants are primary and secondary antioxidants which are well-known, workhorse chemistries that work in a variety of systems. They are are available in powder, granular, and non-dusting forms and have FDA approval in select applications

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