Calcium Carbide Lumps
Calcium carbide lumps (CaC2) are irregular chunks produced by reacting calcium oxide with carbon in an electric arc furnace, used primarily as a raw material for acetylene gas generation. This product falls under HTS 2849.10.00.00 as it is a chemically defined carbide of calcium, meeting Chapter 28 definitions for inorganic compounds. Typically packaged in 50-100 kg steel drums for industrial transport.
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Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If containing >5% impurities or not chemically defined
Chapter notes exclude non-chemically defined carbides from 2849.10, directing them to other subheadings based on composition.
If ground into powder and packaged for retail lab use
Processed forms like powders for retail may fall under chemical preparations rather than pure carbides.
If sold as acetylene-generating mixture with stabilizers
Mixtures for gas production are classified as hydrocarbon gases, not pure inorganic carbides.
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Import Tips & Compliance
• Verify purity levels (>80% CaC2) via certificate of analysis to confirm classification under chemically defined carbides; impurities may shift to 2849.90
• Obtain proper hazardous material shipping documents (UN1402) as it reacts with water to produce flammable acetylene gas
• Check destination country restrictions on carbide imports due to environmental concerns over phosphine emissions during use
Related Products under HTS 2849.10.00.00
Calcium Carbide Granules 25-50mm
Granular calcium carbide sized 25-50mm, optimized for controlled acetylene release in portable generators and welding applications. Classified under HTS 2849.10.00.00 as a pure calcium carbide meeting chemical definition standards in Chapter 28 Note 1. Supplied in moisture-proof containers to prevent premature reaction.
High-Purity Calcium Carbide 98%
High-purity calcium carbide at 98% CaC2 content, used in specialty chemical synthesis and laboratory acetylene production. This chemically defined compound of calcium is specifically covered by HTS 2849.10.00.00 under Chapter 28's inorganic compound definitions. Packaged in inert atmosphere bags to maintain reactivity.
Industrial Calcium Carbide Briquettes
Calcium carbide formed into dense briquettes for efficient storage and transport in steelmaking and carbide lamp applications. Falls under HTS 2849.10.00.00 as chemically defined calcium carbide, explicitly included in Chapter 28 despite physical forming. Briquettes reduce dust and improve handling safety.
Technical Grade Calcium Carbide 85%
Technical grade calcium carbide with 85% minimum CaC2 purity for cost-effective acetylene production in developing markets. Meets HTS 2849.10.00.00 criteria as chemically defined per Chapter 28 Note 1 standards. Commonly used in carbide lamps and small-scale welding.
Calcium Carbide Powder 200 Mesh
Ultra-fine 200 mesh calcium carbide powder for chemical research and micro-scale acetylene generation. Classified as chemically defined calcium carbide under HTS 2849.10.00.00, with particle size not affecting pure compound status per Chapter 28. Shipped under nitrogen to prevent oxidation.