Trifluoroethylene (HFC=CF2) from Mexico
Trifluoroethylene is a fluorinated monomer used in copolymer production for specialty elastomers and electronic materials. Classified under HTS 2903.59.90.00 as an unsaturated fluorinated acyclic hydrocarbon derivative. Chapter 29 note (a) applies to this separate chemically defined compound.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6096.3%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)
Import Tips
• Provide polymerization inhibitor certificates showing stabilizer content
• Comply with NFPA 45 laboratory storage requirements documentation
• Ensure inhibitor levels maintained per manufacturer's specifications to prevent auto-polymerization