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HSChapter 29
U.S. imports of unsaturated fluorinated derivatives of acyclic hydrocarbons (other) (HS 290359) totaled $717K in April 2026, traded with 7 countries.
Importers of Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other) paid $24K in duties in April 2026 — an effective duty rate of 4.2% on $573K in dutiable value, based on actual customs collections rather than the published tariff schedule. Unsaturated Fluorinated Derivatives of Acyclic Hydrocarbons (Other) imports of $717K in April 2026 ran 41% below the year-to-date monthly average of $1.2M.
Last updated: April 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.
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.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $248K | $9K | -$239K |
| NETHERLANDS | -- | $254K | +$254K |
| JAPAN | $227K | -- | -$227K |
| KOREA, SOUTH | $97K | $111K | +$14K |
| MEXICO | $144K | -- | -$144K |
Monthly import values over time
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2903599000 | UNSAT FLUORINATED DERIV OF ACYCLIC HYDROCARBON NES | $713K | 4.17% | $24K |
| 2903591010 | 1,1,3,3,3-PENTAFLUORO-2-(TRIFLUOROMETHYL)PROP-1-EN | $3K | 13.70% | $452 |
UNSAT FLUORINATED DERIV OF ACYCLIC HYDROCARBON NES
1,1,3,3,3-PENTAFLUORO-2-(TRIFLUOROMETHYL)PROP-1-EN
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903599000 | UNSAT FLUORINATED DERIV OF ACYCLIC HYDROCARBON NES | $467K |
| 2903591200 | 1,1,3,3,3-PENTAFLUORO-2-(TRIFLUOROMETHYL)PROP-1-EN | $4K |
UNSAT FLUORINATED DERIV OF ACYCLIC HYDROCARBON NES
45.7K kg
1,1,3,3,3-PENTAFLUORO-2-(TRIFLUOROMETHYL)PROP-1-EN
79 kg
NUCLEIC ACIDS & SALTS; OTHER HETEROCYCLIC CMP, NES
HS 293499
HETEROCYCLIC COMP W NITROGEN HETERO-ATM ONLY NESOI
HS 293399
POLYPEPTIDE PROTEIN& GLYCOPROTEIN HORMONES &DERIV
HS 293719
CMPDS CONT AN UNFUSED PYRIDINE RING ETC NESOI
HS 293339
COMP WITH PYRIMIDINE OR PIPERAZINE RING, NESOI
HS 293359
ANTIBIOTICS, NESOI
HS 294190
| State | Imports | Exports | Balance |
|---|---|---|---|
| Connecticut | $317K | -- | -$317K |
| West Virginia | $55K | $254K | +$199K |
| Pennsylvania | -- | $167K | +$167K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $359K | -- | -$359K |
| NORFOLK-NEWPORT NEWS, VA | -- | $263K | +$263K |
| LOS ANGELES, CA | $91K | $111K | +$21K |