Product classification
HS code for HCFC-141b: 2903.73
Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens, dichlorofluoroethanes (HCFC-141, 141b).
Classification of HCFC-141b under HS 2903.73
HCFC-141b, chemically known as 1,1-dichloro-1-fluoroethane, is classified under HS code 2903.73. This classification is determined by its status as a pure, chemically defined organic compound. Specifically, it falls under Chapter 29, which covers organic chemicals, and heading 2903, which is dedicated to halogenated derivatives of acyclic hydrocarbons. Within this heading, the subheading 2903.73 is reserved for dichlorofluoroethanes. The classification is based on the molecular structure of the substance, which consists of an ethane backbone where three hydrogen atoms are replaced by two chlorine atoms and one fluorine atom. As a hydrochlorofluorocarbon (HCFC), it is an ozone-depleting substance, and its specific classification allows for the monitoring of trade volumes in compliance with international environmental treaties like the Montreal Protocol.
- Covers
- Pure 1,1-dichloro-1-fluoroethane
- HCFC-141b for use as a blowing agent
- HCFC-141b used as a precision cleaning solvent
- Technical grade HCFC-141b
- Also under 2903.73
- Honeywell Genetron 141b
- Arkema Forane 141b
- Chemours Dichlorofluoroethane
- Daikin R-141b
Codes often confused with 2903.73
Common mistake. HCFC-141b is frequently misclassified under HS code 2903.71, which is specifically for chlorodifluoromethane (HCFC-22), or HS code 2903.74, which covers chlorodifluoroethanes (HCFC-142b). Another common error is classifying it under Chapter 38 (specifically 3824.74 or 3827.39) when it is imported as part of a mixture or a pre-blended polyol system. If the substance is not pure but mixed with other chemicals for foam production, it must be classified in Chapter 38 rather than Chapter 29.
Top exporters and importers of HS 290373 (the code used for HCFC-141b), 2025
In 2025, the largest exporter of HS 290373 (the code used for HCFC-141b) in UN Comtrade data was China, with 97% of world exports; the largest importer in UN Comtrade data was South Korea, with 41% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 290373, not only HCFC-141b.
Top exporters 2025 · share of world exports
- 1 China $15M 97% of world exports
- 2 Singapore $193K 1.3% of world exports
- 3 Canada $182K 1.2% of world exports
World total: $15M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 South Korea $6.7M 41% of world imports
- 2 United Arab Emirates* ~$3.1M 19% of world imports · partner records ↗
- 3 Brazil $2.1M 13% of world imports
World total: $16M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries marked * did not, so their figures add up what other countries recorded trading with them, and their exports are valued at buyers' CIF prices. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for HCFC-141b
Brazil classifies HCFC-141b under NCM 2903.73.00: HS 2903.73 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
Questions about HCFC-141b
What is the HS code for HCFC-141b?
The HS code for HCFC-141b is 290373 (Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens; dichlorofluoroethanes (HCFC-141, 141b)). The HS code for pure HCFC-141b is 2903.73, which covers dichlorofluoroethanes.
How do I classify HCFC-141b for customs?
HCFC-141b is classified under HS code 290373 — Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens; dichlorofluoroethanes (HCFC-141, 141b). This is a 6-digit subheading level code.
Does the HS code change if HCFC-141b is used as a solvent?
If it is pure HCFC-141b used as a solvent, the code remains 2903.73. However, if it is a composite organic solvent mixture, it may fall under HS code 3814.00.
Which countries are the top exporters of HCFC-141b (HS 290373)?
In 2025, the top exporters of HS 290373 (the code used for HCFC-141b) in UN Comtrade data were China ($15M, 97% of world exports), Singapore ($193K) and Canada ($182K). World exports came to about $15M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of HCFC-141b (HS 290373)?
In 2025, the top importers of HS 290373 (the code used for HCFC-141b) in UN Comtrade data were South Korea ($6.7M, 41% of world imports), the United Arab Emirates (about $3.1M) and Brazil ($2.1M). World imports came to about $16M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for HCFC-141b the same in all countries?
The base HS code 290373 for HCFC-141b is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for HCFC-141b in Brazil?
In Brazil, HCFC-141b (HS 290373) is classified under NCM 2903.73.00.