7-Nitronaphth[1,2]oxadiazole-5-sulfonic acid monohydrate from China
Hydrated crystalline form of the acid compound, still classified under HTS 2934.99.06.00 per Chapter Note 2(d) allowing water dissolution. The monohydrate form enhances handling stability for lab and industrial synthesis applications.
Duty Rate — China → United States
100%
Rate breakdown
9903.04.6093.5%Pharmaceuticals Annex IV: patented pharma articles — 100% floor rate
9903.05.900%Articles already subject to Section 232 (steel/aluminum/copper + derivatives, autos + parts, wood, medium/heavy vehicles + parts, semiconductors, patented pharma) — U.S. note 52(f)
Import Tips
• Specify exact water content (theoretical 8.5% for monohydrate) in COA
• Use desiccated packaging to maintain hydration state during transit
• Avoid classification disputes by confirming water is lattice-bound, not solvent