Tetrabromophthalic Anhydride
Tetrabromophthalic anhydride is a halogenated aromatic polycarboxylic acid anhydride used primarily as a reactive flame retardant intermediate in polymer production. It falls under HTS 2917.39.17.00 as a specifically named derivative of aromatic polycarboxylic acids with bromine substitution. The compound's structure features a phthalic anhydride core with four bromine atoms, meeting Chapter 29 note requirements for halogenated derivatives.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If blended with solvents or stabilizers exceeding Chapter 29 purity limits
Mixtures of organic chemicals not chemically defined as single compounds fall under Chapter 38 prepared chemical preparations.
If supplied as halide derivative rather than anhydride form
Halides of aromatic carboxylic acids classify under heading 2908 per Chapter 29 note (E), preceding 2917 numerically.
If imported specifically as flame retardant additive for goods classifiable in Chapters 59 or 69
Chemicals imported solely for specific end-use in textile or ceramic flame retardants may classify under Chapter 38 per goods of specific industries note.
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Import Tips & Compliance
• Provide chemical analysis certificates confirming tetrabromophthalic anhydride purity and bromine content to verify classification under 2917.39.17.00
• Include Safety Data Sheets (SDS) detailing flammability, toxicity, and REACH compliance for TSCA registration with US EPA
• Avoid misclassification as mixtures by ensuring shipments contain >98% pure compound without added stabilizers beyond Chapter 29 note (f) allowances
Related Products under HTS 2917.39.17.00
TBPA Flame Retardant Intermediate
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.
4,5,6,7-Tetrabromophthalic Anhydride
Pure 4,5,6,7-tetrabromophthalic anhydride (CAS 6322-99-2) used in reactive flame retardant synthesis for unsaturated polyester resins. Meets HTS 2917.39.17.00 as the specifically enumerated tetrabrominated aromatic anhydride derivative. Provides thermal stability and bromine source for covalent flame retardant bonding.
Flame Retardant TBPA Anhydride
Industrial-grade tetrabromophthalic anhydride for manufacturing brominated epoxy resins used in printed circuit boards. Specifically classified under HTS 2917.39.17.00 as the named tetrabromo derivative of phthalic anhydride. Provides high bromine content (68%) for effective flame suppression.