Guaiacol Formaldehyde from Mexico
Guaiacol-formaldehyde refers to condensation products or protected forms used in resin synthesis and pharmaceutical intermediates. As chemically defined guaiacol derivatives maintaining ether-phenol function, under HTS 2909.50.20.00. Industrial resin precursor import.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
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
• Molecular weight analysis required to distinguish monomer from polymeric resin
• Hazardous material declaration if free formaldehyde exceeds safety limits