Antioxidant BX AO 2777


BX AO 2777 is mainly used in polyolefins and olefin-copolymers such as polyethylene, polypropylene, and polystyrene. Other applications include use in linear polyesters, high-impact polystyrene, ABS, PVC, EPDM, nylon, acetals, and polyurethanes. 2777 can also be used in combination with UV absorbers and light stabilizers to provide enhanced performance.

Antioxidant BX AO 2777 is a blend of BX AO 1790 and BX AO 168, CAS NUMBER (BX AO 1790) 040601-76-1; CAS NUMBER (BX AO 168) 31570-04-4


Melting Point,°C 166-171

Description White to off-white powder

BX AO 1790, % 33.3 ± 3

Acid Number 1.0 max

Specific Gravity (25°C) 1.07


  • Minimal color and odor contribution
  • Low volatility
  • Excellent processing stabilizer
  • Low gas yellowing
  • Low water carry-over
  • FDA sanctioned components
  • Resistant to black speck formation and pinking
  • Compatible with polymeric HALS and UVAs

Handling and Safety: 

Before handling this material, read the corresponding Material Safety Data Sheet (MSDS) for safety, health, and environmental data.


Both components of BX AO 2777 antioxidant are sanctioned as antioxidants and/or stabilizers for use in polyolefins (21 CFR 178.2010) and in polystyrene

and rubber-modified polystyrene (21 CFR 177.1640).


To maintain product integrity, store indoors in a cool dry place, preferably at 25°C (77°F) or below. Avoid direct exposure to sunlight or temperature above 40°C (104°F).


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