N-(4-Dimethylaminobenzylidene)aniline from Canada
This push-pull Schiff base imine features dimethylamino donor and imine acceptor groups, classified under HTS 2925.29.90.00. Used in nonlinear optics and dye chemistry.
Duty Rate — Canada → 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
• Submit 13C-NMR confirming C=N stretch at 1600-1650 cm⁻¹ for Customs verification
• Declare as 'non-hazardous solid' if melting point >60°C to reduce shipping costs
• Include supplier's GC-MS purity certificate (>95%)