Salicylidene-2-aminophenol from Mexico
Salicylidene-2-aminophenol forms a bis-imine chelating ligand for metal complexes, classified under HTS 2925.29.90.00 as an imine derivative. Used in catalysis and coordination 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
• Provide chelation stability constants (log K) for metal complex formation
• Declare as 'ligand precursor' to distinguish from final metal complexes
• Include tautomerism study confirming keto-enol equilibrium