Loading...
HSChapter 28
U.S. imports of calcium carbide (HS 284910) totaled $407K in April 2026, traded with 3 countries.
Importers of Calcium Carbide paid $48K in duties in April 2026 — an effective duty rate of 12% on $407K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 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.
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.
Monthly import values over time
Supplier Network
Get discovered by U.S. importers searching for HS 284910 — Calcium Carbide. Be the first supplier listed.
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2849100000 | CARBIDES, CHEMICALLY DEFINED OR NOT, OF CALCIUM | $407K | 11.80% | $48K |
CARBIDES, CHEMICALLY DEFINED OR NOT, OF CALCIUM
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2849100000 | CARBIDES, CHEMICALLY DEFINED OR NOT, OF CALCIUM | $1.1M |
CARBIDES, CHEMICALLY DEFINED OR NOT, OF CALCIUM
673.1K kg
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
ANHYDROUS AMMONIA
HS 281410
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
SILICON, UNDER 99.99% (BY WEIGHT) SILICON
HS 280469
PHOSPHORIC ACID AND POLYPHOSPHORIC ACIDS
HS 280920
| State | Imports | Exports | Balance |
|---|---|---|---|
| Kentucky | -- | $1.1M | +$1.1M |
| Texas | $176K | -- | -$176K |
| Pennsylvania | $91K | $47K | -$43K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| PORT HURON, MI | -- | $526K | +$526K |
| SEATTLE, WA | -- | $393K | +$393K |
| HOUSTON, TX | $235K | -- | -$235K |