1-Naphthol-4-sulfonic acid monohydrate from Mexico
Hydrated form of 1-Naphthol-4-sulfonic acid, stable for transport in dye production. Remains under HTS 2908.99.06.00 as water-associated product of (d) note, not altering chemical classification.
Duty Rate — Mexico → United States
10%
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
Import Tips
• Document hydrate water content separately from solvent notes
• Ensure stabilization doesn't exceed preservation limits
• Test for consistency in batch declarations