3-Nitrobenzenesulfonic Acid from China
3-Nitrobenzenesulfonic acid features both nitro and sulfonic acid groups on the benzene ring, making it a sulfonated/nitrated derivative of benzenesulfonic acid (heading 2904). Classified under HTS 2913.00.40.00 as other aromatic derivatives. Key intermediate for direct dyes.
Duty Rate — China → United States
43%
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
• Water solubility testing required to confirm sulfonic acid functionality
• Position isomer (meta vs ortho/para) must match invoice description
• pH stability data helps distinguish from carboxylic acid derivatives