Bayer's Acid Salt (1-Naphthylamine-4-sulfonic Acid Sodium Salt) from Germany
Bayer's acid sodium salt serves as a crucial intermediate for direct and reactive dyes, featuring the aminohydroxynaphthalenesulfonic acid structure. It is specifically listed under HTS 2922.21.4000 per additional U.S. note 3 to section VI for quota-controlled dye chemicals. The compound's classification follows chapter rules prioritizing oxygen-function amino-phenols.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.97, articles the product of a member state of the European Union, with an ad valorem (or ad valorem equivalent) rate of duty under column 1 less than 10 percent, as provided for in U.S. note 52 to this subchapter
Import Tips
• Cross-reference exact chemical name against U.S. note 3 list to confirm tariff line applicability before shipment
• Maintain batch records showing synthesis from qualifying naphthol precursors to support chapter 29 chemical definition
• Beware of misdeclaration as 'dye intermediate mixture' which could trigger 3824 classification and different duties