Neutral Ammonium Fluoride from Mexico
Neutral ammonium fluoride (pure NH4F anhydrous) is used for specialty etching and doping. It is a chemically defined fluoride of ammonium, falling under 'other' fluorides in this tariff item, provided it is not doped for electronics.
Duty Rate — Mexico → Canada
0%
Import Tips
• Ensure the product is not doped for electronics, which would fall under heading 38.18
• Provide a certificate of analysis
• Verify the product is not put up for retail sale as a medicament