U.S. imports of Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other) (HS 290359) totaled $2.5M in August 2026, imported from 9 countries.
Importers of Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other) paid $354K in duties in August 2026, an average duty rate of 14.18% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other) imports of $2.5M in August 2026 ran 70% above the year-to-date monthly average of $1.5M.
Last updated: August 2026 dataBeyond the named HFOs in heading 2903.51, this residual group captures other unsaturated fluorinated acyclic compounds — including fluorinated alkenes used as chemical intermediates, specialty monomers for fluoropolymer synthesis, and novel low-GWP refrigerant candidates. The US schedule provides two distinct 10-digit lines for 1,1,3,3,3-pentafluoro-2-(trifluoromethyl)prop-1-ene (2903591010 and 2903591200) alongside a general NES line (2903599000). China and Japan lead US imports, with South Korea, India, and Italy also supplying. The dual enumeration of the same IUPAC compound across two 10-digit lines reflects differing tariff treatment and requires careful classification review.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
12 import shipments a month
Tariff lines 2903591010 and 2903591200 cover the same compound but carry different duty or trade-remedy treatment — a common US schedule technique for applying differentiated rates by origin or use. Importers must determine which line applies based on the specific tariff treatment in effect for their shipment's country of origin and intended use, and should consult a licensed customs broker to avoid misclassification.
The NES line captures specialty fluorinated monomers (such as certain vinyl fluoride precursors), intermediates for agrochemical and pharmaceutical synthesis, and experimental low-GWP refrigerant candidates not yet assigned their own named subheading. Demand is fragmented across fine-chemical, fluoropolymer, and refrigerant-development sectors, making this a technically diverse and relatively low-volume heading.
Subheading 6 of 41 in heading 2903
Subheading 290359 · $2.5M of $50.6M
ImportsExports
Imports
$2.5MYoY · free account
Exports
$1.2MYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $16.7M of Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other) and exported $8.5M.
Through August 2026. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 290359 — Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other), so the companies trading it can find you. Be the first supplier listed.
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 |
|---|---|---|---|---|---|
| 2903599000 | Unsat Fluorinated Deriv of Acyclic Hydrocarbon Nes | $2.5M | 14.18% | 100.00% | $354K |
| 2903591010 | 1,1,3,3,3-Pentafluoro-2-(Trifluoromethyl)Prop-1-En | — | -- | -- | -- |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903599000 | Unsat Fluorinated Deriv of Acyclic Hydrocarbon Nes | $1.2M |
| 2903591200 | 1,1,3,3,3-Pentafluoro-2-(Trifluoromethyl)Prop-1-En | $19K |
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
China and Japan together supply 87% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 14.18% of imports for consumption.