Ammonium Tungstate Powder from Mexico
Ammonium tungstate powder is an ammonium salt of tungstic acid, used as a precursor in tungsten carbide production and as a source of tungsten in various applications. It is a chemically defined compound that meets the criteria of Chapter 28 notes. This product is correctly classified under tariff item 2841.80.00 as a tungstate.
Duty Rate — Mexico → Canada
0%
Import Tips
• Provide a detailed technical data sheet showing the chemical composition
• Ensure the product is not mixed with other substances that could change classification
• Keep records of the manufacturing process to demonstrate it is a tungstate