HS code · 6-digit subheading
HS Code 2903.79 – Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens; n.e.c. in item no. 2903.7
HS code 2903.79 is the 6-digit subheading for halogenated derivatives of acyclic hydrocarbons containing two or more different halogens, n.e.c. in item no. 2903.7. It is used for bromochloromethane, dichlorofluoromethane, chlorodifluoromethane (HCFC-22), dichlorotetrafluoroethane (CFC-114) and bromotrifluoromethane (Halon 1301).
What HS 2903.79 covers
This HS code covers halogenated derivatives of acyclic hydrocarbons that contain two or more different halogen atoms, and are not elsewhere specified in subheading 2903.7. These compounds are crucial in various industrial applications, often serving as refrigerants, blowing agents, fire suppressants, or specialized solvents. Due to their environmental impact, particularly ozone depletion potential (ODP) and global warming potential (GWP), many of these substances, like certain HCFCs and HFCs, are subject to strict international regulations such as the Montreal Protocol and Kigali Amendment. Major chemical manufacturers and distributors are key players in this trade, with significant import/export flows between industrialized nations and emerging economies. Companies involved in HVAC, refrigeration, and fire protection industries are primary consumers. The trade landscape is constantly evolving due to ongoing phase-downs and transitions to more environmentally friendly alternatives.
- Covers
- Bromochloromethane
- Dichlorofluoromethane
- Chlorodifluoromethane (HCFC-22)
- Dichlorotetrafluoroethane (CFC-114)
- Bromotrifluoromethane (Halon 1301)
- 1,1,1,2-Tetrafluoroethane (HFC-134a)
- Examples
- R-410A (blend containing HFCs)
- R-404A (blend containing HFCs)
- Halon 1301 (historical fire suppressant)
- HCFC-22 (refrigerant)
Codes often confused with 2903.79
Common mistake. This code can be confused with single halogenated acyclic hydrocarbons (e.g., 2903.39 for HFC-134a if considered a single halogen, though it contains fluorine and hydrogen) or with mixtures of halogenated derivatives (3824.7x) if they are not pure compounds.
Top exporters and importers of HS code 290379, 2025
In 2025, the largest exporter of HS code 290379 in UN Comtrade data was China, with 25% of world exports; the largest importer in UN Comtrade data was the United States, with 15% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Top exporters 2025 · share of world exports
- 1 China $87M 25% of world exports
- 2 United States $85M 25% of world exports
- 3 India $58M 17% of world exports
World total: $345M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $56M 15% of world imports
- 2 Netherlands $54M 15% of world imports
- 3 Canada $52M 14% of world imports
World total: $361M 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 that did not report are estimated from what other countries recorded trading with them. 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 codes for 2903.79 7
Brazil splits HS 2903.79 into 7 NCM codes, Mercosur's 8-digit tariff lines.
- 2903.79.1 Derivatives of methane, ethane or propane, halogenated only with fluorine and chlorineDerivados do metano, etano ou propano, halogenados unicamente com flúor e cloro Group
- 2903.79.11 ChlorofluoroethanesClorofluoroetanos
- 2903.79.12 ChlorotetrafluoroethanesClorotetrafluoroetanos
- 2903.79.19 Other hydrochlorofluorocarbons (HCFCs)Outros
- 2903.79.20 Hydrobromofluorocarbons (HBFCs)Derivados do metano, etano ou propano, halogenados unicamente com flúor e bromo
- 2903.79.3 BromochlorotrifluoroethanesBromoclorotrifluoroetanos Group
- 2903.79.31 HalothaneHalotano
- 2903.79.39 Other bromochlorotrifluoroethanesOutros
- 2903.79.90 Other mixed-halogen acyclic derivativesOutros
All Brazil NCM codes in heading 29.03 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 2903.79
What is HS code 290379?
HS code 290379 is a 6-digit subheading in the Harmonized System that covers: Halogenated derivatives of acyclic hydrocarbons containing two or more different halogens; n.e.c. in item no. 2903.7. This HS code covers halogenated derivatives of acyclic hydrocarbons that contain two or more different halogen atoms, and are not elsewhere specified in subheading 2903.7. These compounds are crucial in various industrial applications, often serving as refrigerants, blowing agents, fire suppressants, or specialized solvents. Due to their environmental impact, particularly ozone depletion potential (ODP) and global warming potential (GWP), many of these substances, like certain HCFCs and HFCs, are subject to strict international regulations such as the Montreal Protocol and Kigali Amendment. Major chemical manufacturers and distributors are key players in this trade, with significant import/export flows between industrialized nations and emerging economies. Companies involved in HVAC, refrigeration, and fire protection industries are primary consumers. The trade landscape is constantly evolving due to ongoing phase-downs and transitions to more environmentally friendly alternatives.
What products fall under HS code 290379?
Bromochloromethane, Dichlorofluoromethane, Chlorodifluoromethane (HCFC-22), Dichlorotetrafluoroethane (CFC-114), Bromotrifluoromethane (Halon 1301), 1,1,1,2-Tetrafluoroethane (HFC-134a)
What are common misclassifications for HS code 290379?
This code can be confused with single halogenated acyclic hydrocarbons (e.g., 2903.39 for HFC-134a if considered a single halogen, though it contains fluorine and hydrogen) or with mixtures of halogenated derivatives (3824.7x) if they are not pure compounds.
Which countries are the top exporters of goods under HS code 290379?
In 2025, the top exporters of HS code 290379 in UN Comtrade data were China ($87M, 25% of world exports), the United States ($85M) and India ($58M). World exports came to about $345M, 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 goods under HS code 290379?
In 2025, the top importers of HS code 290379 in UN Comtrade data were the United States ($56M, 15% of world imports), the Netherlands ($54M) and Canada ($52M). World imports came to about $361M, 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.
How is HS code 290379 structured?
HS code 290379 is a 6-digit subheading under the Harmonized System. The first 2 digits (29) identify the chapter, digits 3-4 (03) identify the heading, and digits 5-6 (79) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 290379?
Brazil splits HS code 290379 into 7 NCM codes: 2903.79.11 (Chlorofluoroethanes), 2903.79.12 (Chlorotetrafluoroethanes), 2903.79.19 (Other hydrochlorofluorocarbons (HCFCs)), 2903.79.20 (Hydrobromofluorocarbons (HBFCs)), 2903.79.31 (Halothane), 2903.79.39 (Other bromochlorotrifluoroethanes), 2903.79.90 (Other mixed-halogen acyclic derivatives). The first 6 digits of each match the HS code.