U.S. exports of Calcium Carbide (HS 284910) totaled $842K in August 2026.
Importers of Calcium Carbide paid $9K in duties in August 2026, an average duty rate of 25.55% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Calcium Carbide imports of $71K in August 2026 ran 75% below the year-to-date monthly average of $283K.
Last updated: August 2026 dataCalcium carbide — classified under a single 10-digit line (2849100000) — is the primary industrial precursor to acetylene gas and calcium cyanamide fertilizer, and is also used in steel desulfurization and PVC production. Slovakia leads US imports under this heading, with Brazil and Mexico also notable suppliers, a geographic spread that reflects energy-intensive production economics rather than raw material proximity. The commodity is subject to DOT hazardous materials regulations due to its reactivity with water to generate flammable acetylene gas.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
3 import shipments a month
Calcium carbide production is extremely energy-intensive, requiring electric arc furnaces operating at very high temperatures. Slovakia's relatively low industrial electricity costs and established carbide manufacturing infrastructure have made it a competitive exporter, even to markets as distant as the United States.
Calcium carbide reacts with moisture to produce flammable acetylene gas and is classified as a Division 4.3 dangerous-when-wet material under DOT 49 CFR. Shipments must be packaged in hermetically sealed, moisture-proof containers with appropriate UN markings and placards. Port storage and handling facilities must be equipped to manage the fire and explosion risk.
Trade Directory
List your company under HS 284910 — Calcium Carbide, so the companies trading it can find you. Be the first supplier listed.
ImportsExports
Imports
$71KYoY · free account
Exports
$842KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $4.5M of Calcium Carbide and exported $10.5M.
Through August 2026. Source: U.S. Census Bureau.
Subheading 3 of 3 in heading 2849
Subheading 284910 · $842K of $11.1M
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2849100000 | Carbides, Chemically Defined or not, of Calcium | $35K | 25.55% | 100.00% | $9K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2849100000 | Carbides, Chemically Defined or not, of Calcium | $842K |
Import lines come from the U.S. Harmonized Tariff Schedule and export lines from Schedule B. The two are numbered by different agencies, so the same 10-digit code can appear in both tables describing a different product.
Exports · August 2026
destination
Canada and Mexico together take 100% of it.
customs district
origin
entry
rate provision · imports
duty collected equals 25.55% of imports for consumption.