N-(4-Dimethylaminobenzylidene)aniline from Mexico
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 — Mexico → United States
110%
Rate breakdown
9903.04.6096.3%Except as provided in heading 9903.04.61, patented pharmaceutical articles as provided for in subdivisions (c) and (d) of U.S. note 40 to this subchapter
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
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%)