U.S. imports of Chlorine (HS 280110) totaled $9.5M in August 2026, imported from 7 countries.
Importers of Chlorine paid $27K in duties in August 2026, an average duty rate of 0.28% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule.
Last updated: August 2026 dataElemental chlorine — a critical industrial chemical used in water treatment, PVC production, and pharmaceutical synthesis — is classified under a single tariff line (2801100000) and is subject to strict hazardous-materials transport regulations that shape import logistics as much as duty considerations. Canada and Mexico are the leading suppliers to the US market, reflecting the importance of proximity given chlorine's classification as a toxic gas requiring specialized pressurized containers. Importers should be aware that chlorine shipments may also trigger EPA Toxic Substances Control Act (TSCA) certification requirements at entry.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
296 import shipments a month
Chlorine is classified as a toxic gas under DOT regulations (UN 1017), requiring proper shipping papers, placarding, and use of DOT-specification pressure vessels. At the port of entry, CBP will coordinate with DOT and potentially EPA; importers must also submit an EPA TSCA certification (either a positive certification or a statement of exemption) with each shipment.
Because chlorine is a hazardous compressed gas with significant transport risk and cost, supply chains strongly favor nearby origins. Canada and Mexico lead US imports precisely because overland shipment in approved tank cars or ISO containers minimizes transit time and regulatory complexity compared to ocean freight from more distant sources.
Subheading 2 of 3 in heading 2801
Subheading 280110 · $9.5M of $24.1M
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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 |
|---|---|---|---|---|---|
| 2801100000 | Chlorine | $9.5M | 0.28% | 2.24% | $27K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2801100000 | Chlorine | $216K |
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.
ImportsExports
Imports
$9.5MYoY · free account
Exports
$216KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $125.8M of Chlorine and exported $4.6M.
Through August 2026. Source: U.S. Census Bureau.
Imports · August 2026
origin
Canada and Mexico together supply 98% of it. South Korea pays 12.5% duty; Canada 0.0%.
customs district
entry
rate provision · imports
97.8% enters free of duty; duty collected equals 0.28% of imports for consumption.