Songnox 259 Polymer Stabilizer from Canada
Songnox 259 is 1,6-Hexanediol bis(3,5-dibutyl-4-hydroxyphenyl)propionate supplied as white powder or flakes for stabilizing polypropylene and polyethylene against thermal oxidation. Classified under HTS 2918.29.06.00 due to its carboxylic acid with phenol function structure, fitting Chapter 29's scope for chemically defined organic compounds with oxygen functions.
Duty Rate — Canada → United States
15.8%
Rate breakdown
9903.05.2910%Section 301 (forced labor) — additional 10% ad valorem on products of Canada
Import Tips
• Label shipments with exact CAS number (123-66-0 equivalent structure) and batch purity to match the specific HTS subheading
• Avoid common pitfall of declaring as 'antioxidant mixture' which shifts to 3824; specify as pure compound
• Comply with REACH/TSCA registration proofs for polymer additives entering US markets