Tungsten Azide W(N3)6 from Canada
Tungsten hexakis(azide) is an energetic material used in pyrotechnics and airbag initiators. It classifies under HTS 2850.00.10.00 as a chemically defined azide of tungsten. The air-stable crystalline compound offers high detonation velocity.
Duty Rate — Canada → United States
15.5%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Mandatory UN explosives classification (Division 1.1D); ATF import license required
• Quantity limits apply (<50g per package) for air shipment
• Detonation testing certification needed to confirm azide identity