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HSChapter 29
U.S. imports of dichlorotrifluoroethanes (hcfc-123) (HS 290372) totaled $210K in May 2026, traded with 4 countries.
Importers of Dichlorotrifluoroethanes (HCFC-123) paid $81K in duties in May 2026 — an effective duty rate of 39% on $210K in dutiable value, based on actual customs collections rather than the published tariff schedule. Dichlorotrifluoroethanes (HCFC-123) imports of $210K in May 2026 ran 38% above the year-to-date monthly average of $153K.
Last updated: May 2026 dataHCFC-123 is a low-pressure refrigerant used primarily as a replacement for CFC-11 in large centrifugal chillers for commercial building HVAC systems, and it also serves as a chemical intermediate in fluoropolymer production. Like other HCFCs, its import requires EPA consumption allowances under the Montreal Protocol phasedown, with the allowance cap tightening on a scheduled basis. China leads US imports under tariff line 2903720100, followed by South Korea and Singapore. The compound's relatively low ozone-depletion potential compared to CFCs has extended its commercial life, but importers should monitor EPA's phaseout timeline as the 2030 complete phaseout date approaches.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
EPA's HCFC phaseout schedule calls for a complete elimination of HCFC consumption allowances by 2030. Chiller operators relying on HCFC-123 for equipment servicing should develop transition plans now — either retrofitting existing chillers to accept HFO or HFC alternatives, or budgeting for equipment replacement — to avoid supply disruptions as allowances become increasingly scarce in the late 2020s.
Importers must declare the quantity of HCFC-123 and demonstrate that valid EPA consumption allowances cover the shipment. CBP coordinates with EPA on HCFC imports, and entries lacking allowance documentation will be refused. Commercial invoices should clearly identify the compound by CAS number and trade name to facilitate accurate classification under 2903720100.
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| Country | Imports | Exports | Balance |
|---|---|---|---|
| CHINA | $210K | $3K | -$208K |
| KOREA, SOUTH | -- | -- | -- |
| CANADA | -- | -- | -- |
| SINGAPORE | -- | -- | -- |
HS10 import codes under this HS6 parent. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Import Value | Effective Tariff % | Dutiable Share |
|---|---|---|---|---|
| 2903720100 | DICHLOROTRIFLUOROETHANE (HCFC-123) | $0 | -- | -- |
DICHLOROTRIFLUOROETHANE (HCFC-123)
HS10 export codes under this HS6 parent. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903720100 | DICHLOROTRIFLUOROETHANES | $3K |
DICHLOROTRIFLUOROETHANES
8.1K 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
Monthly import values over time
| Port | Imports | Exports | Balance |
|---|---|---|---|
| CHARLESTON, SC | -- | $3K | +$3K |
| HOUSTON, TX | -- | -- | -- |
| PORT HURON, MI | -- | -- | -- |