TBPA Flame Retardant Intermediate from Japan
TBPA (tetrabromophthalic anhydride) serves as a key reactive intermediate for synthesizing brominated polyester resins and polyurethane flame retardants. Classified under HTS 2917.39.17.00 due to its specific chemical identity as a tetrabrominated phthalic anhydride. Used in electronics and construction materials for high-temperature flame resistance.
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
• Declare CAS number 6322-99-2 on commercial invoice and ensure TSCA pre-manufacture notification if new chemical substance
• Verify bromination level through NMR or GC-MS analysis to distinguish from dibromophthalic derivatives under other subheadings
• Ship in UN-approved chemical containers with proper DOT hazard class 9 labeling for solid organic anhydrides