Ammonium Tungstate Hydrate Flakes from Mexico
Flaked ammonium tungstate hydrate ((NH4)2O·12WO3·10H2O) is a hydrated form of ammonium tungstate used in analytical reagents and plating baths. The hydrated salt form remains classified as an ammonium tungstate under this tariff item, as hydration does not alter its chemical identity as a tungstate salt.
Duty Rate — Mexico → Canada
0%
Import Tips
• Specify the water of crystallization content on the invoice, as this affects the customs value and duty calculation
• Keep the product in sealed packaging to prevent moisture loss during transit, which could affect the declared weight
• Verify the purity grade matches the commercial invoice to avoid discrepancies at the border