U.S. imports of Perhalogenated Acyclic Hydrocarbon Derivatives with Fluorine and Chlorine (CFCs and Related) (HS 290377) totaled $545K in August 2026, imported from 2 countries.
Importers of Perhalogenated Acyclic Hydrocarbon Derivatives with Fluorine and Chlorine (CFCs and Related) paid $88K in duties in August 2026, an average duty rate of 16.20% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Perhalogenated Acyclic Hydrocarbon Derivatives with Fluorine and Chlorine (CFCs and Related) imports of $545K in August 2026 ran 53% above the year-to-date monthly average of $356K.
Last updated: August 2026 dataTrichlorofluoromethane (CFC-11, line 2903770010) and trichlorotrifluoroethanes (CFC-113, line 2903770020) are fully halogenated chlorofluorocarbons whose import is tightly controlled under EPA's Montreal Protocol allowance program; remaining permitted imports are largely for feedstock or laboratory use. The residual NESOI line (2903770080) captures other perhalogenated fluorine-and-chlorine compounds used as specialty solvents and chemical intermediates. China is the leading US supplier across this heading, followed by South Korea, Taiwan, Japan, and Canada — a concentration that raises supply-chain scrutiny given ongoing Section 301 considerations for Chinese chemical imports.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
4 import shipments a month
Imports of CFC-11 originating from China may be subject to Section 301 tariffs, which apply on top of the standard column 1 duty rate. Importers should verify the current Section 301 status for the applicable HTS line and factor that cost into landed-price calculations alongside EPA allowance requirements.
The specific lines (2903770010 for CFC-11 and 2903770020 for trichlorotrifluoroethanes) apply only to those named compounds. Any other perhalogenated acyclic derivative containing only fluorine and chlorine that does not match those descriptions falls to the NESOI line 2903770080. Misclassification between these lines can affect duty rates and EPA reporting obligations, so chemical identity verification is essential.
Subheading 17 of 41 in heading 2903
Subheading 290377 · $545K of $50.6M
ImportsExports
Imports
$545KYoY · free account
Exports
—YoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $3.3M of Perhalogenated Acyclic Hydrocarbon Derivatives with Fluorine and Chlorine (CFCs and Related) and exported $1.3M.
Through August 2026 · exports 11 of 12 months reported. 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 |
|---|---|---|---|---|---|
| 2903770080 | Deriv Perhalogen Only W/ Fluorine & Chlorine NESOI | $545K | 16.20% | 100.00% | $88K |
| 2903770020 | Trichlorotrifluoroethanes | — | -- | -- | -- |
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Imports · August 2026
origin
China and Japan together supply 100% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 16.20% of imports for consumption.