Buffered Hydrofluoric Acid (BHF) from United States
Buffered HF solution typically 6:1 HF:NH4F for silicon dioxide etching in microelectronics. Primarily hydrogen fluoride, thus classified under tariff item 2811.11.00 per Chapter 28 inorganic acids note, despite buffering. Imported for precision etching.
Duty Rate — United States → Canada
0%
Import Tips
• Confirm the HF concentration and the presence of ammonium fluoride
• Provide a detailed composition breakdown for customs
• Ensure the product is not put up for retail sale, which could affect classification