26,806 official source entries are searchable. Checked 2026-09-22; edition published 2026-09-15.
Printed tariff and statistical lines from this edition, separate from historical WITS averages. Blank duty cells are not a confirmed zero. Review the parent tariff line, general and chapter notes, chapter 99, origin, exclusions, quotas and additional duties. No shipment total or special-rate eligibility is calculated. The edition publication date is not a line-level effective date.
Halogenated derivatives of hydrocarbons: › Unsaturated fluorinated derivatives of acyclic hydrocarbons:
2,3,3,3-Tetrafluoropropene (HFO-1234yf),1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz)
Source units: kg
Reported average: 3.70000004768372%.
Source year: 2023. Classification: HS 2022 (H6). Checked 2026-09-14.
National lines included: 1 of 1. Excluded from the average: 0.
Reported ad-valorem range: 3.70000004768372%–3.70000004768372%.
Reported historical ad-valorem MFN simple average for 2023, not a national tariff schedule. No preferential rates, additional duties, VAT, excise or import permissions are determined.
Not a current 2026 national duty. The HS6 average does not determine the duty of a particular national subdivision, origin or shipment.
WITS observation for this code and year
UN Comtrade H6 descriptions (HS 2022)
WITS API definitions: reported averages and excluded national lines
Direct HS code answer for United States
The source reports an indicative HS6 MFN average of 3.70% (2023 MFN average) for Unsaturated fluorinated derivatives of acyclic hydrocarbons; 2,3,3,3-tetrafluoropropene (HFO-1234yf), 1,3,3,3-tetrafluoropropene (HFO-1234ze) and (Z)-1,1,1,4,4,4-hexafluoro-2-butene (HFO-1336mzz).Source status: not assessed. Verify the exact national tariff line, origin treatment, taxes, restrictions, and current customs guidance before using this information in a declaration.
3.70% (2023 MFN average)
not assessed
Import planning
Request a one-page research summary with source checks, landed-cost inputs, and points to verify for HS code 290351 in United States.
Each destination shows its own source label. Oman uses its national schedule; Qatar and UAE entries may cite their separately published references and unresolved exceptions. Other entries retain the historical GCC reference. National codes, duty notes, restrictions and tax treatment can differ; verify with the destination customs authority.
| HS Code | Description | Duty |
|---|---|---|
| 290311 | Saturated chlorinated derivatives of acyclic hydrocarbons; chloromethane (methyl chloride) and chloroethane (ethyl chloride) | 5.50% (2023 MFN average)WITS 2023 historical MFN average |
| 290312 | Saturated chlorinated derivatives of acyclic hydrocarbons; dichloromethane (methylene chloride) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290313 | Saturated chlorinated derivatives of acyclic hydrocarbons; chloroform (trichloromethane) | 5.50% (2023 MFN average)WITS 2023 historical MFN average |
| 290314 | Saturated chlorinated derivatives of acyclic hydrocarbons; carbon tetrachloride | 2.30% (2023 MFN average)WITS 2023 historical MFN average |
| 290315 | Saturated chlorinated derivatives of acyclic hydrocarbons; ethylene dichloride (ISO) (1,2-dichloroethane) | 5.50% (2023 MFN average)WITS 2023 historical MFN average |
| 290319 | Saturated chlorinated derivatives of acyclic hydrocarbons; n.e.c. in item no. 2903.1 | 3.58% (2023 MFN average)WITS 2023 historical MFN average |
| 290321 | Unsaturated chlorinated derivatives of acyclic hydrocarbons; vinyl chloride (chloroethylene) | 5.50% (2023 MFN average)WITS 2023 historical MFN average |
| 290322 | Unsaturated chlorinated derivatives of acyclic hydrocarbons; trichloroethylene | 4.20% (2023 MFN average)WITS 2023 historical MFN average |
| 290323 | Unsaturated chlorinated derivatives of acyclic hydrocarbons; tetrachloroethylene (perchloroethylene) | 3.40% (2023 MFN average)WITS 2023 historical MFN average |
| 290329 | Unsaturated chlorinated derivatives of acyclic hydrocarbons; n.e.c. in item no. 2903.2 | 5.50% (2023 MFN average)WITS 2023 historical MFN average |
| 290341 | Saturated fluorinated derivatives of acyclic hydrocarbons; trifluoromethane (HFC-23) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290342 | Saturated fluorinated derivatives of acyclic hydrocarbons; difluoromethane (HFC-32) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290343 | Saturated fluorinated derivatives of acyclic hydrocarbons; fluoromethane (HFC-41), 1,2-difluoroethane (HFC-152) and 1,1-difluoroethane (HFC-152a) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290344 | Saturated fluorinated derivatives of acyclic hydrocarbons; pentafluoroethane (HFC-125), 1,1,1-trifluoroethane (HFC-143a) and 1,1,2-trifluoroethane (HFC-143) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290345 | Saturated fluorinated derivatives of acyclic hydrocarbons; 1,1,1,2-tetrafluoroethane (HFC-134a) and 1,1,2,2-tetrafluoroethane (HFC-134) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290346 | Saturated fluorinated derivatives of acyclic hydrocarbons; 1,1,1,2,3,3,3-heptafluoropropane (HFC-227ea), 1,1,1,2,2,3-hexafluoropropane (HFC-236cb), 1,1,1,2,3,3-hexafluoropropane (HFC-236ea) and 1,1,1,3,3,3-hexafluoropropane (HFC-236fa) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290347 | Saturated fluorinated derivatives of acyclic hydrocarbons; 1,1,1,3,3-pentafluoropropane (HFC-245fa) and 1,1,2,2,3-pentafluoropropane (HFC-245ca) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290348 | Saturated fluorinated derivatives of acyclic hydrocarbons; 1,1,1,3,3-pentafluorobutane (HFC-365mfc) and 1,1,1,2,2,3,4,5,5,5-decafluoropentane (HFC-43-10mee) | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290349 | Saturated fluorinated derivatives of acyclic hydrocarbons; n.e.c. in item no 2903.4 | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
| 290359 | Unsaturated fluorinated derivatives of acyclic hydrocarbons; n.e.c. in item no. 2903.5 | 3.70% (2023 MFN average)WITS 2023 historical MFN average |
Data source: WITS/UNCTAD TRAINS (MFN 2022). Values are indicative HS6 MFN averages, not shipment-specific applied rates. Import permission and restrictions are not assessed. Historical reference rates exclude VAT, excise and other national measures. Separate national entries preserve the columns printed by their source; these are not a complete shipment assessment. Full disclaimer.