3815.90.10.00/Tungsten Nitride Ammonia Synthesis Catalyst/Japan

Tungsten Nitride Ammonia Synthesis Catalyst from Japan

W2N catalytic phase for high-pressure ammonia synthesis as Haber-Bosch alternative. Inorganic nitride classified under HTS 3815.90.1000 as reaction accelerator. Nitrogenase-inspired structure.

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%

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Import Tips

• N2 dissociation activity data essential for catalyst classification

• Cubic WN phase confirmation via XRD differentiates from wear coatings

• High-pressure reactor compatibility specifications