Calcium Nitride Granules
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.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If marketed as a nitrogen fertilizer additive
Calcium nitride derivatives used in fertilizers fall under Chapter 31 per chapter exclusions.
If as a complex salt with silver or gold
Double salts of calcium nitride with precious metals are classified in 2842 for complex salts.
If doped for semiconductor wafers
Doped nitrides cut into wafers shift from Chapter 28 to heading 3818 per chapter note on electronic materials.
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Import Tips & Compliance
• 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
Related Products under HTS 2850.00.05.00
Calcium Hydride Powder
Calcium hydride (CaH2) is a grayish-white powder used as a desiccant and reducing agent in chemical synthesis and hydrogen generation. It falls under HTS 2850.00.0500 as a chemically defined hydride of calcium, distinct from carbides in heading 2849. This inorganic compound reacts with water to produce hydrogen gas.
Calcium Silicide Powder
Calcium silicide (CaSi2) powder acts as a deoxidizer in steel production and ferrosilicon manufacturing. It is classified in HTS 2850.00.0500 as a chemically defined silicide of calcium, excluding carbides. The compound improves steel fluidity and reduces oxygen content.
Calcium Boride Crystals
Calcium boride (CaB6) crystals used in refractory materials and neutron absorbers for nuclear applications. Falls under HTS 2850.00.0500 as a chemically defined boride of calcium. Known for high hardness and thermal stability.
Calcium Azide Fine Powder
Calcium azide (Ca(N3)2) fine powder employed as an initiator in airbag inflators and explosives. Classified under HTS 2850.00.0500 as a chemically defined azide of calcium. Extremely shock-sensitive requiring specialized handling.
Technical Grade Calcium Hydride
Technical grade calcium hydride (85-95% purity) for industrial drying and hydrogen generation in oil refining. HTS 2850.00.0500 covers this chemically defined calcium hydride despite impurities. Supplied in moisture-proof drums.
Calcium Nitride for LEDs
High-purity calcium nitride precursor for green LED phosphors in displays. Classified HTS 2850.00.0500 as chemically defined calcium nitride. Vacuum-sealed for semiconductor processing.