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HSChapter 29
U.S. imports of trifluoromethane (hfc-23) (HS 290341) totaled $486K in April 2026, traded with 2 countries.
Importers of Trifluoromethane (HFC-23) paid $67K in duties in April 2026 — an effective duty rate of 14% on $486K in dutiable value, based on actual customs collections rather than the published tariff schedule. Trifluoromethane (HFC-23) imports of $486K in April 2026 ran 98% above the year-to-date monthly average of $245K.
Last updated: April 2026 dataHFC-23 carries one of the highest global warming potentials among hydrofluorocarbons, making it a focal point of international climate policy under the Kigali Amendment to the Montreal Protocol. Classified under 10-digit line 2903411000, US imports originate predominantly from China, with Japan and Taiwan as secondary sources. Importers should be aware that HFC-23 is subject to Section 301 tariffs on Chinese-origin goods, and EPA AIM Act regulations governing HFC production and consumption may affect import allowances and reporting requirements.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
The AIM Act authorizes EPA to phase down HFC production and consumption in the US and to regulate their use. Importers of HFC-23 may be subject to EPA allowance requirements, and shipments may require prior EPA authorization. Compliance obligations are evolving, so importers should consult current EPA guidance before contracting supply.
Beyond standard TSCA certification, importers should be prepared to provide documentation of the compound's intended use, as EPA may require it to verify allowance eligibility. Some downstream customers also require environmental compliance certifications given HFC-23's climate impact profile.
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Monthly import values over time
| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $480K | $26K | -$454K |
| ISRAEL | -- | $33K | +$33K |
| IRELAND | -- | $31K | +$31K |
| JAPAN | $6K | -- | -$6K |
| UNITED KINGDOM | -- | -- | -- |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Duty Collected |
|---|---|---|---|---|
| 2903411000 | TRIFLUOROMETHANE (HFC-23) | $486K | 13.70% | $67K |
TRIFLUOROMETHANE (HFC-23)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903411000 | TRIFLUOROMETHANE (HFC-23) | $89K |
TRIFLUOROMETHANE (HFC-23)
11.6K 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 |
|---|---|---|---|
| New Jersey | $187K | -- | -$187K |
| Pennsylvania | $127K | $57K | -$71K |
| New York | $98K | -- | -$98K |
| Port | Imports | Exports | Balance |
|---|---|---|---|
| NEWARK, NJ | $339K | -- | -$339K |
| LOS ANGELES, CA | $141K | -- | -$141K |
| NORFOLK-NEWPORT NEWS, VA | -- | $63K | +$63K |