Potassium 7-Nitronaphth[1,2]oxadiazole-5-sulfonate from China
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 — China → United States
6.5%
Rate breakdown
9903.03.030%Articles the product of any country, as provided for in subdivision (aa)(ii) of U.S. note 2 to this subchapter
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