Tungsten Azide W(N3)6 from China
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 — China → United States
43%
Rate breakdown
9903.88.0325%Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)
9903.05.3112.5%Section 301 (forced labor) — additional 12.5% ad valorem on products of China
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