Potassium 7-Nitronaphth[1,2]oxadiazole-5-sulfonate from Mexico
Potassium salt variant of the specific sulfonic acid heterocyclic compound under HTS 2934.99.06.00. Offers higher thermal stability than sodium salt, preferred in certain high-temperature dye fixation processes and pharmaceutical salt screening.
Duty Rate — Mexico → United States
16.5%
Rate breakdown
9903.05.5510%Section 301 (forced labor) — additional 10% ad valorem on products of Mexico
Import Tips
• Submit counterion analysis certificate specifying potassium content
• Ensure packaging prevents moisture absorption which could form hydrates
• Verify no organic solvent residues remain from salt preparation process