Ammonium Tungstate Hydrate Flakes from China
Flaked ammonium tungstate hydrate ((NH4)2O·12WO3·10H2O) for analytical reagents and plating baths. The hydrated salt form remains classified as ammonium tungstate under HTS 2841.80.0010.
Duty Rate — China → United States
30.5%
Rate breakdown
9903.91.0125%Effective with respect to entries on or after September 27, 2024, articles the product of China, as provided for in subdivision (b) of U.S. note 31 to this subchapter
9903.05.860%Articles provided for in subdivision (b) of U.S. note 52 to this subchapter
Import Tips
• Document water of hydration content to confirm tungstate identity
• Lab-grade requires USP/ACS compliance certificates
• Flake form reduces dust hazards vs powder