1-Bromo-1-chloro-2,2-difluoroethane from Mexico
A mixed halogenated ethane used as an intermediate in pharmaceutical manufacturing. Classified in HTS 2903.79.90.70 for acyclic hydrocarbons with bromine, chlorine, and fluorine halogens, not matching more specific provisions.
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
• Pharma-grade imports require FDA Drug Master File references and GMP certificates
• Specify batch impurity profiles (<0.1% oxygenates) to maintain Chapter 29 purity status