TBPA Flame Retardant Intermediate from Mexico
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 — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
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