Aspirin Diethylamine Salt from Mexico
Diethylamine salt of O-acetylsalicylic acid used in topical analgesic gels. Falls under 2918.22.5000 as organic base salt per note (C)(2), classified by acid component occurring later in chapter. Bulk chemical for semi-solid formulations.
Duty Rate — Mexico → United States
100%
Rate breakdown
9903.04.6093.5%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
• Provide NMR confirming salt ionic bond; declare amine:acid molar ratio; comply with GHS labeling for corrosive potential