Sodium 7-Nitronaphth[1,2]oxadiazole-5-sulfonate from Japan
The sodium salt form of 7-nitronaphth[1,2]oxadiazole-5-sulfonic acid, explicitly covered by HTS 2934.99.06.00. This water-soluble salt maintains the core heterocyclic structure with sulfonate functionality, used in aqueous dye coupling processes and as a reagent in organic synthesis.
Duty Rate — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
Import Tips
• Include salt formation verification via NMR spectroscopy in documentation
• Check for water content as excessive hydration might affect classification purity requirements
• Confirm counterion is sodium only; other metal salts may require different subheadings