Pentafluorophenol from Mexico
Pentafluorophenol has all five ring hydrogens replaced by fluorine atoms, creating a highly electrophilic phenol derivative. Falls under HTS 2908.19.60.00 as the ultimate 'only halogen' substituted phenol. Used in organofluorine coupling reactions and peptide synthesis.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6094.5%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
• Fluorinated compounds require specialized hazmat declarations due to HF generation potential
• High purity grades (>98%) common; verify assay certificates match technical specifications
• Research chemical imports may use 9810.00.6000 for duty-free scientific instrument exemption