Calcium Nitride Granules from Mexico
Calcium nitride (Ca3N2) in granular form serves as a nitrogen source in metallurgy and semiconductor production. Classified under HTS 2850.00.0500 as a chemically defined nitride of calcium, meeting Chapter 28 Note 1 criteria. It hydrolyzes to release ammonia.
Duty Rate — Mexico → United States
10%
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
• Declare nitrogen content precisely to distinguish from calcium cyanamide (Chapter 31 exclusion)
• Include end-use statements if for fertilizer production to prevent reclassification
• Verify importer has facilities for air-sensitive materials as calcium nitride is reactive with moisture