Bayer's Acid Salt (1-Naphthylamine-4-sulfonic Acid Sodium Salt) from China
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 — China → United States
24%
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
9903.88.157.5%Except as provided in headings 9903.88.39, 9903.88.42, 9903.88.44, 9903.88.47, 9903.88.49, 9903.88.51, 9903.88.53, 9903.88.55, 9903.88.57, 9903.88.65, 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(r) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(s)
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