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Technical Datasheet | Supplied by Songwon
SONGNOX® 331B PW by Songwon is a blend of hindered phenolic antioxidant(25.0%) and secondary phosphite antioxidant (75.0%). Provides excellent melt flow and color protection. Offers long term heat stability. SONGNOX® 331B PW also provides gas fade resistance in polyolefins and avoids the negative effects of discoloration due to exposure to nitrogen oxides (NOX). Applications include polyethylene, polyethylene copolymers, polypropylene, and polypropylene copolymers for the stabilization of fibers, thin films, filled grades, molded articles etc. It is listed on AICS, DSL, IECSC, ENCS, NZIOC, ECL, TSCA and PICCS inventories.
Product Type
  • Antioxidants > Phosphites
  • Antioxidants > Phenolics
Chemical Composition
Blend of tris(2,4-di-tert-butylphenyl) phosphite and tris-(3,5-di-tert-butylhydroxybenzyl) isocyanurate
CAS Number
31570-04-4, 27676-62-6
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