Tungsten Hydride WH Powder from Japan
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 — Japan → United States
12.5%
Rate breakdown
9903.05.4912.5%Section 301 (forced labor) — Japan (col1 rate < 12.5 percent): MFN < 12.5% → total duty capped at 12.5%
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