6-Amino-1-Naphthol-3-Sulfonic Acid (J Acid) from China
J Acid contains amino group on naphthalene making it a naphthylamine derivative despite hydroxy substituent. Classifies HTS 2921.45.90 as 'other' aromatic monoamine derivative. Oxygen function secondary to nitrogen-function per Chapter 29 rules.
Duty Rate — China → United States
41.5%
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
• Highly reactive; must ship with stabilizer per chapter note (f)
• Distinguish from Gamma acid (8-isomer); CAS 89-63-4 specific
• Oxidation sensitivity requires nitrogen blanketing in packaging