Ammonium 1-Naphthol-4-sulfonate from Germany
Ammonium salt of 4-Hydroxy-1-naphthalenesulfonic acid, used in analytical chemistry. Classified in HTS 2908.99.06.00 following Chapter 29 rule for salts of sulfo derivatives.
Duty Rate — Germany → United States
10%
Rate breakdown
9903.05.3910%Section 301 (forced labor) — European Union member state (col1 rate < 10 percent): MFN < 10% → total duty capped at 10%
Import Tips
• Declare cation ratio to avoid misclassification as organic base salt
• Use lab-grade labeling for compliance
• Monitor for emetic additions triggering safety note (g)