4-Amino-1-naphthalenesulfonic Acid from Japan
4-Amino-1-naphthalenesulfonic acid is a derivative of 1-naphthylamine with a sulfonic acid group attached, classified under HTS 2921.45.90 as an 'other' aromatic monoamine derivative and salt thereof. It is primarily used as an intermediate in the production of azo dyes and pigments.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of Japan, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 12.5 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Provide detailed chemical composition and CAS number (84-86-6) on commercial invoice for proper HTS verification
• Obtain SDS and ensure compliance with TSCA registration for US import of this dye intermediate
• Verify purity levels as impurities may affect classification; common pitfall is mislabeling as finished dye (Chapter 32)