Ammonium Heptamolybdate Tetrahydrate from China
Crystalline ammonium heptamolybdate tetrahydrate ((NH4)6Mo7O24·4H2O), a soluble source of molybdenum for fertilizers and reagents. While a molybdate salt, pure forms are sometimes associated with HTS 2825.70.00.00 if misclassified as hydroxide-derived; primarily 2841. Used in analytical chemistry.
Duty Rate — China → United States
15.7%
Rate breakdown
9903.05.3112.5%Except for products described in headings 9903.05.85–9903.05.92, articles the product of China, as provided for in U.S. note 52 to this subchapter
Import Tips
• Confirm if truly oxide/hydroxide vs salt to avoid 2841 reclassification; include solubility data in docs
• Pitfall: agricultural use may trigger Chapter 31 scrutiny