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Of calcium

Hydrides, nitrides, azides, silicides and borides, whether or not chemically defined, other than compounds which are also carbides of heading 2849: > Of calcium

Duty Rate (from China)

35%
MFN Base RateFree
9903.03.01+10%

Except for products described in headings 9903.03.02–9903.03.11, articles the product of any country, as provided for in subdivision (aa) of U.S. note 2 to this subchapter

9903.88.03+25%

Except as provided in headings 9903.88.13, 9903.88.18, 9903.88.33, 9903.88.34, 9903.88.35, 9903.88.36, 9903.88.37, 9903.88.38, 9903.88.40, 9903.88.41, 9903.88.43, 9903.88.45, 9903.88.46, 9903.88.48, 9903.88.56, 9903.88.64, 9903.88.66, 9903.88.67, 9903.88.68, or 9903.88.69, articles the product of China, as provided for in U.S. note 20(e) to this subchapter and as provided for in the subheadings enumerated in U.S. note 20(f)

Total Effective Rate35%
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Products classified 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 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.

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.

Calcium Silicide 30% Powder

30% calcium silicide powder alloy used in welding rod coatings and cast iron inoculation. HTS 2850.00.0500 for chemically defined calcium silicides. Enhances graphite nucleation in iron castings.

Calcium Boride Neutron Absorber

Calcium boride (CaB6) pellets as control rod material in nuclear reactors. Classified under HTS 2850.00.0500 as calcium boride. High boron-10 content for neutron capture.

Calcium Azide Airbag Initiator

Stabilized calcium azide for automotive airbag squibs and detonators. HTS 2850.00.0500 covers chemically defined calcium azides. Lower sensitivity than lead azide.