U.S. imports of Thionyl Chloride (HS 281217) totaled $330K in August 2026, imported from 3 countries.
Importers of Thionyl Chloride paid $26K in duties in August 2026, an average duty rate of 9.81% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Thionyl Chloride imports of $330K in August 2026 ran 105% above the year-to-date monthly average of $161K.
Last updated: August 2026 dataThionyl chloride (SOCl₂) is a highly reactive chlorinating agent central to pharmaceutical active ingredient synthesis and agrochemical production, where it converts carboxylic acids to acyl chlorides. Germany and India are the leading US suppliers, with Switzerland also a notable source — a pattern reflecting the compound's tight integration with European and South Asian fine-chemical manufacturing networks. Its extreme moisture sensitivity and corrosive properties require full DOT hazardous materials compliance, and importers should confirm TSCA certification requirements are met before filing entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
13 import shipments a month
Thionyl chloride reacts violently with water, releasing sulfur dioxide and hydrogen chloride gases. Shipments must be packaged in sealed, moisture-proof containers meeting DOT corrosive material standards, and carriers must be notified of the hazard class. Any breach of packaging integrity can create both safety hazards and customs examination delays.
Thionyl chloride is listed as a Schedule 3 precursor under the Chemical Weapons Convention. While commercial trade is permitted, importers may encounter end-use declaration requirements from exporting countries and should ensure their documentation clearly identifies the industrial or pharmaceutical end-use to facilitate smooth customs clearance.
Subheading 4 of 9 in heading 2812
Subheading 281217 · $330K of $4.7M
ImportsExports
Imports
$330KYoY · free account
Exports
$25KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $1.7M of Thionyl Chloride and exported $686K.
Fewer than 6 of the last 12 months reported trade, or the latest month was under $500K; the trend chart is not shown for thin series.
Through August 2026. Source: U.S. Census Bureau.
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 |
|---|---|---|---|---|---|
| 2812170000 | Thionyl Chloride | $263K | 9.81% | 100.00% | $26K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2812170000 | Thionyl Chloride | $25K |
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.
Imports · August 2026
origin
Germany and India together supply 100% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 9.81% of imports for consumption.
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