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HSChapter 29
U.S. exports of fluoromethane (hfc-41), hfc-152, and hfc-152a (HS 290343) totaled $3.8M in July 2026.
Importers of Fluoromethane (HFC-41), HFC-152, and HFC-152a paid $333K in duties in July 2026 — an effective duty rate of 14% on $2.4M in dutiable value, based on actual customs collections rather than the published tariff schedule. Fluoromethane (HFC-41), HFC-152, and HFC-152a imports of $2.4M in July 2026 ran 113% above the year-to-date monthly average of $1.1M.
Last updated: July 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.
51 shipments/mo
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.
Subheading 6 of 41 in heading 2903
Subheading 290343 · $2.4M of $60.3M
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ImportsExports
Imports
$2.4MYoY · Pro
Exports
$3.8MYoY · Pro
12-mo low · imports
YoY · ProThrough July 2026. 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 | Import Value | Effective Tariff % | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2903431000 | Fluoromethane (Hfc-41), Hfc-152 and Hfc-152a | $2.4M | 13.65% | 99.73% | $333K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903431000 | Fluoromethane (Hfc-41), Hfc-152 and Hfc-152a | $3.8M |
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.
Exports · July 2026
destination
Canada and Japan together take 71% of it.
customs district
origin
entry
rate provision · imports
0.3% enters free of duty; the effective duty rate is 13.65%.