Disproportionated Rosin from Mexico
Disproportionated rosin undergoes heat treatment to stabilize abietic acid, used in solder fluxes and inks. It remains under HTS 3806.90.00.00 as a processed derivative of rosin acids.
Duty Rate — Mexico → United States
14.2%
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
• Submit GC-MS analysis showing stabilized isomer profile to distinguish from crude rosin
• Declare exact disproportionation degree (typically 90%+) for accurate duty assessment
• Monitor for FDA registration if used in food-contact applications like chewing gum base