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HSChapter 28
U.S. exports of chlorosulfuric acid (HS 280620) totaled $11K in June 2026, traded with 3 countries.
Chlorosulfuric acid (also called chlorosulfonic acid) is a highly reactive sulfonating and chlorosulfonating agent used primarily in pharmaceutical synthesis, agrochemical manufacturing, and dye production — niche end uses that make it a specialty chemical with a concentrated supplier base. All US imports enter under a single line (2806200000), and Switzerland, Belgium, and the Netherlands — all major European fine-chemical exporters — account for the leading supply. Given its extreme reactivity with water and classification as a hazardous material, DOT transport compliance and proper container certification are critical entry requirements alongside customs clearance.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
Production of chlorosulfuric acid is closely tied to integrated chlorine and sulfur trioxide manufacturing infrastructure, which is concentrated among large European chemical companies. Switzerland, Belgium, and the Netherlands host major specialty chemical producers with the safety systems and regulatory approvals needed to handle and export this highly reactive substance.
Beyond standard customs entry documents, importers must provide a Safety Data Sheet (SDS) meeting OSHA HazCom standards, DOT-compliant hazardous-materials shipping papers, and evidence of proper UN-specification packaging. EPA TSCA import certification is also required, and carriers must comply with hazmat transport regulations for corrosive materials.
Monthly import values over time
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| KOREA, SOUTH | -- | $11K | +$11K |
| MEXICO | -- | -- | -- |
| BELGIUM | -- | -- | -- |
| NETHERLANDS | -- | -- | -- |
| SWITZERLAND | -- | -- | -- |
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 |
|---|---|---|---|---|
| 2806200000 | CHLOROSULFURIC ACID | $0 | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2806200000 | CHLOROSULFURIC ACID | $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
| State | Imports | Exports | Balance |
|---|---|---|---|
| Wisconsin | -- | $11K | +$11K |
| New York | -- | -- | -- |
| Washington | -- | -- | -- |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| LONG BEACH, CA | -- | $11K | +$11K |
| NEWARK, NJ | -- | -- | -- |
| PHILADELPHIA, PA | -- | -- | -- |