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HSChapter 28
U.S. imports of cyanogen chloride (chlorocyan) (HS 285310) totaled $85K in June 2026, traded with 1 country.
Importers of Cyanogen Chloride (Chlorocyan) paid $11K in duties in June 2026 — an effective duty rate of 13% on $85K in dutiable value, based on actual customs collections rather than the published tariff schedule. Cyanogen Chloride (Chlorocyan) imports of $85K in June 2026 ran 500% above the year-to-date monthly average of $14K.
Cyanogen chloride (ClCN) is a highly toxic industrial chemical used as a precursor in the synthesis of triazine herbicides, fumigants, and certain specialty chemicals, and is classified under a single 10-digit line (2853100000). As a Schedule 3 chemical under the Chemical Weapons Convention (CWC), its import and export are subject to declaration requirements administered by the US Department of Commerce and monitored by the Organisation for the Prohibition of Chemical Weapons (OPCW). Belgium and South Korea are the leading suppliers to the US market. Importers must ensure that end-use and end-user documentation is in order, as misuse potential triggers heightened scrutiny at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Cyanogen chloride is a CWC Schedule 3 chemical. US importers must comply with Commerce Department reporting requirements under the Chemical Weapons Convention Regulations (CWCR), including annual declarations of quantities imported and end-use certifications. Shipments from non-CWC states parties may face additional restrictions.
Yes. Cyanogen chloride is classified as a toxic gas under DOT hazardous materials regulations (49 CFR), requiring pressure-rated cylinders, proper hazard labeling (Poison Gas, UN 1589), and compliance with carrier-specific dangerous goods rules. Port of entry handling must also conform to OSHA and EPA emergency planning requirements given its acute inhalation hazard.
Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CZECH REPUBLIC | $85K | -- | -$85K |
| BAHRAIN | -- | -- | -- |
| MEXICO | -- | -- | -- |
| ISRAEL | -- | -- | -- |
| CANADA | -- | -- | -- |
Supplier Network
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HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2853100000 | CYANOGEN CHLORIDE (CHLOROCYAN) | $85K | 12.80% | 100.00% | $11K |
URANIUM ENRICHED IN U235 ETC. PLUTONIUM ETC.
HS 284420
ANHYDROUS AMMONIA
HS 281410
NATURAL URANIUM & COMPOUNDS, ALLOYS & CERAMICS ETC
HS 284410
TUNGSTATES (WOLFRAMATES)
HS 284180
ALLOYS, DISPERSIONS,ISOTOPES & COMPOUNDS NES
HS 284443
ALUMINUM OXIDE, EXCEPT ARTIFICIAL CORUNDUM, NESOI
HS 281820
| Port | Imports | Exports | Balance |
|---|---|---|---|
| HOUSTON, TX | $85K | -- | -$85K |
| HILDAGO, TX | -- | -- | -- |
| PORT EVERGLADES, FL | -- | -- | -- |