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
16.5%
Rate breakdown
9903.03.0110%Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 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