Phthalic Anhydride with 0.02% Inhibitor from China
Phthalic anhydride stabilized with minimal hydroquinone inhibitor (0.02%) to prevent premature polymerization during storage/transport, allowable under Chapter 29 note (f). Specifically classified HTS 2917.35.00.00 as the primary product remains the pure anhydride.
Duty Rate — China → United States
44%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
Import Tips
• Specify inhibitor type/concentration in commercial invoice and SDS to validate note (f) stabilizer exception
• Maintain stabilizer levels via sealed packaging - degradation changes product identity
• Avoid excess stabilizer declarations which trigger 3824 chemical mixture classification