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Technical Datasheet | Supplied by Songwon
SONGNOX® 311B PW by Songwon is an antioxidant. It is a blend of tris-(3,5-di-tert-butylhydroxybenzyl) isocyanurate and tris(2,4-di-tert-butylphenyl) phosphite (1:1). It provides excellent melt flow and color protection. It offers long term heat stability. SONGNOX® 311B 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 and molded articles.
Product Type
  • Antioxidants > Phosphites
  • Antioxidants > Phenolics
Chemical Composition
Blend of tris-(3,5-di-tert-butylhydroxybenzyl) isocyanurate and tris(2,4-di-tert-butylphenyl) phosphite
CAS Number
31570-04-4, 27676-62-6
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