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HSChapter 29
U.S. imports of fluoromethane (hfc-41), hfc-152, and hfc-152a (HS 290343) totaled $902K in April 2026, traded with 3 countries.
Importers of Fluoromethane (HFC-41), HFC-152, and HFC-152a paid $130K in duties in April 2026 — an effective duty rate of 14% on $900K in dutiable value, based on actual customs collections rather than the published tariff schedule.
Last updated: April 2026 dataHFC-152a (1,1-difluoroethane) is the commercially dominant compound in this group, used as a propellant in aerosol products and as a refrigerant blend component with a relatively low global warming potential. All three substances — fluoromethane (HFC-41), HFC-152, and HFC-152a — are classified together under 10-digit line 2903431000. China is the primary US import source, with Spain and Canada also supplying the market. EPA AIM Act allowance requirements apply to these HFCs, and importers should confirm current allocation status before arranging shipment.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
HFC-152a is primarily used as an aerosol propellant in consumer and industrial spray products and as a component in refrigerant blends. Its relatively low GWP compared to many other HFCs has sustained demand even as regulatory pressure on higher-GWP substances increases.
No. Under the current US HTS schedule, all three substances share a single 10-digit line (2903431000). Importers should nonetheless identify the specific compound on commercial invoices and entry documentation, as EPA AIM Act reporting and allowance tracking may require substance-level identification.
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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 |
|---|---|---|---|---|
| 2903431000 | FLUOROMETHANE (HFC-41), HFC-152 AND HFC-152A | $902K | 14.43% | $130K |
FLUOROMETHANE (HFC-41), HFC-152 AND HFC-152A
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903431000 | FLUOROMETHANE (HFC-41), HFC-152 AND HFC-152A | $3.0M |
FLUOROMETHANE (HFC-41), HFC-152 AND HFC-152A
170.5K 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 |
|---|---|---|---|
| California | $251K | $1.0M | +$773K |
| Georgia | $446K | $286K | -$161K |
| Texas | $2K | $530K | +$528K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| SAVANNAH, GA | $446K | $388K | -$58K |
| OAKLAND, CA | -- | $750K | +$750K |
| PORT HURON, MI | -- | $683K | +$683K |