U.S. imports of Chlorodifluoroethanes (HCFC-142, HCFC-142b) (HS 290374) totaled $669K in August 2026, imported from 2 countries.
Importers of Chlorodifluoroethanes (HCFC-142, HCFC-142b) paid $67K in duties in August 2026, an average duty rate of 10.00% — duty actually collected as a share of the imports that cleared customs, not the published tariff schedule. Chlorodifluoroethanes (HCFC-142, HCFC-142b) imports of $669K in August 2026 ran 67% below the year-to-date monthly average of $2.0M.
Last updated: August 2026 dataRegulated as ozone-depleting substances under the Montreal Protocol, HCFC-142 and HCFC-142b face EPA-administered consumption allowances that cap the volume importers may legally bring into the US in any given year. The single tariff line (2903740100) covers both isomers, which are used primarily as refrigerants and polymer-foam blowing agents. France is the leading US supplier under this heading, reflecting European chemical producers' role in transitional refrigerant supply chains.
AI-written summary of the official U.S. Census Bureau trade figures on this page — verify before relying on it.
11 import shipments a month
EPA consumption allowances are allocated on an annual basis, and once an importer's allowance is exhausted for the year, further imports are prohibited regardless of commercial contracts. Importers should track allowance balances carefully and coordinate shipment scheduling to avoid stranded cargo at the port of entry.
HCFC-142b contains chlorine in addition to fluorine and hydrogen, placing it in the HCFC subheadings of Chapter 29 and triggering Montreal Protocol controls. Fully chlorine-free HFCs (e.g., HFC-134a) classify elsewhere in the tariff schedule and are not subject to the same EPA allowance regime, so correct chemical identification is critical before filing entry.
Subheading 16 of 41 in heading 2903
Subheading 290374 · $669K of $50.6M
ImportsExports
Imports
$669KYoY · free account
Exports
$29KYoY · free account
12-mo low · imports
Low · free accountOver the twelve months to August 2026, the U.S. imported $25.3M of Chlorodifluoroethanes (HCFC-142, HCFC-142b) and exported $113K.
Through August 2026 · exports 9 of 12 months reported. Source: U.S. Census Bureau.
Trade Directory
List your company under HS 290374 — Chlorodifluoroethanes (HCFC-142, HCFC-142b), so the companies trading it can find you. Be the first supplier listed.
HS10 import codes under this HS6 parent, each with its own page. Source: U.S. Harmonized Tariff Schedule.
| Code | Description | Imports for consumption | Average duty rate | Dutiable Share | Duty Collected |
|---|---|---|---|---|---|
| 2903740100 | Chlorodifluoroethanes | $669K | 10.00% | 100.00% | $67K |
HS10 export codes under this HS6 parent, each with its own page. Source: U.S. Schedule B export classification.
| Code | Description | Export Value |
|---|---|---|
| 2903740100 | Chlorodifluoroethanes | $29K |
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.
Imports · August 2026
origin
France and China together supply 100% of it.
customs district
destination
entry
rate provision · imports
duty collected equals 10.00% of imports for consumption.