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
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Document hydrate water content separately from solvent notes
• Ensure stabilization doesn't exceed preservation limits
• Test for consistency in batch declarations