8-Amino-1-naphthalenesulfonic acid (Schaeffer's Acid) from China
Schaeffer's acid (8-Amino-1-naphthalenesulfonic acid) serves as a crucial intermediate for producing direct and reactive dyes, featuring an amino group ortho to the sulfonic acid on naphthalene. Classified under HTS 2921.45.10.00 as one of the specifically enumerated naphthalenesulfonic acid amines. Meets Chapter 29 criteria for separate chemically defined aromatic monoamines and derivatives.
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
• Include certificate of analysis confirming ≥97% purity and correct positional isomer to validate HTS specificity
• Label shipments with UN number for dangerous goods if hydrate form exceeds transport thresholds