Tungsten Hydride WH Powder from Mexico
Tungsten hydride powder functions as a hydrogen storage material and catalyst precursor in chemical synthesis. It is classified under HTS 2850.00.10.00 as a hydride of tungsten per the heading scope for chemically defined compounds. The metastable compound decomposes at moderate temperatures.
Duty Rate — Mexico → United States
15.5%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Ship under proper pyrophoric solid precautions (UN3138) due to spontaneous ignition risk
• Require stability data showing hydride formation vs adsorbed hydrogen on tungsten
• EU import notification required for nano-hydrides under REACH Annex XVII