5-Amino-2-(p-aminoanilino) Benzenesulfonic Acid from China
This complex aromatic polyamine with sulfonic acid substitution is explicitly named in HTS 2921.59.0800 for use in azo dye coupling. It contains multiple amine functions connected via anilino linkage on a benzenesulfonic acid core. Fits Chapter 29 as a chemically defined aromatic polyamine derivative.
Duty Rate — China → United States
40.8%
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
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)
Import Tips
• Exact CAS number matching required for specific HTS; generic description risks reclassification
• Water-soluble due to sulfonic group; test for impurities per Chapter 29 note (a)
• Comply with REACH Annex XVII restrictions if from EU; notify for carcinogenicity