Disproportionated Rosin from Canada
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 — Canada → United States
14.2%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, 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