2924.29.23.00/2,2'-Oxamido bis[ethyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate]/Mexico

2,2'-Oxamido bis[ethyl-3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] from Mexico

This compound is a sterically hindered phenolic antioxidant amide used as a stabilizer in polymers and plastics to prevent oxidative degradation. Classified under HTS 2924.29.23.00 as a specifically listed aromatic amide derivative, it qualifies as a separate chemically defined organic compound per Chapter 29 scope.

Duty Rate — Mexico → United States

100%

Rate breakdown

9903.04.60100%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate

9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)

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Import Tips

• Include stabilizer content declaration if added per note (f); use proper UN packaging for transport safety

• Common pitfall: incorrect heading if blended into plastic masterbatch (Chapter 39)