Disproportionated Rosin from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, 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