HS code · 6-digit subheading
HS Code 3827.51 – Mixtures containing halogenated derivatives of methane, ethane or propane; containing trifluoromethan (HFC-23) or perfluorocarbons (PFCs) but not containing chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs); containing trifluoromethane (HFC-2
HS code 3827.51 is the 6-digit subheading for mixtures containing halogenated derivatives of methane, ethane or propane, containing trifluoromethan (HFC-23) or perfluorocarbons (PFCs) but not containing chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs), containing trifluoromethane (HFC-2. It is used for R-23 blends, very low-temperature refrigerants, specialized fire suppression agents, semiconductor etching gases and industrial process gases.
What HS 3827.51 covers
This HS code covers mixtures of halogenated derivatives of methane, ethane, or propane that specifically contain trifluoromethane (HFC-23) or perfluorocarbons (PFCs), but not chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs). The defining characteristic is the presence of HFC-23. HFC-23 is a potent greenhouse gas, often generated as a byproduct during the production of HCFC-22, and its emissions are a significant environmental concern. These mixtures are traded for niche applications such as very low-temperature refrigeration, specialized fire suppression systems, and as etching gases in the semiconductor industry. Importers and exporters are typically specialized chemical manufacturers and industrial gas suppliers, operating under strict environmental regulations aimed at controlling and destroying HFC-23 emissions.
- Covers
- R-23 blends
- Very low-temperature refrigerants
- Specialized fire suppression agents
- Semiconductor etching gases
- Industrial process gases
- Examples
- DuPont Freon 23 (as a blend component)
- Honeywell Genetron 23 (as a blend component)
- specific industrial gas blends for ultra-low temperature applications
Codes often confused with 3827.51
Common mistake. Could be confused with other HFC mixtures (e.g., 38276x series) if the specific presence of HFC-23 is overlooked. Pure HFC-23 (2903.39) should not be classified here.
Top exporters and importers of HS code 382751, 2025
In 2025, the largest exporter of HS code 382751 in UN Comtrade data was the United States, with 32% of world exports; the largest importer in UN Comtrade data was Germany, with 37% 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 United States $1.0M 32% of world exports
- 2 Germany $710K 22% of world exports
- 3 Netherlands $653K 20% of world exports
World total: $3.3M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 Germany $2.0M 37% of world imports
- 2 Austria $513K 9.3% of world imports
- 3 China $504K 9.1% of world imports
World total: $5.5M 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 code for 3827.51
Brazil does not split HS 3827.51: its NCM code is 3827.51.00.
All Brazil NCM codes in heading 38.27 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 3827.51
What is HS code 382751?
HS code 382751 is a 6-digit subheading in the Harmonized System that covers: Mixtures containing halogenated derivatives of methane, ethane or propane; containing trifluoromethan (HFC-23) or perfluorocarbons (PFCs) but not containing chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs); containing trifluoromethane (HFC-2. This HS code covers mixtures of halogenated derivatives of methane, ethane, or propane that specifically contain trifluoromethane (HFC-23) or perfluorocarbons (PFCs), but not chlorofluorocarbons (CFCs) or hydrochlorofluorocarbons (HCFCs). The defining characteristic is the presence of HFC-23. HFC-23 is a potent greenhouse gas, often generated as a byproduct during the production of HCFC-22, and its emissions are a significant environmental concern. These mixtures are traded for niche applications such as very low-temperature refrigeration, specialized fire suppression systems, and as etching gases in the semiconductor industry. Importers and exporters are typically specialized chemical manufacturers and industrial gas suppliers, operating under strict environmental regulations aimed at controlling and destroying HFC-23 emissions.
What products fall under HS code 382751?
R-23 blends, very low-temperature refrigerants, specialized fire suppression agents, semiconductor etching gases, industrial process gases
What are common misclassifications for HS code 382751?
Could be confused with other HFC mixtures (e.g., 38276x series) if the specific presence of HFC-23 is overlooked. Pure HFC-23 (2903.39) should not be classified here.
Which countries are the top exporters of goods under HS code 382751?
In 2025, the top exporters of HS code 382751 in UN Comtrade data were the United States ($1.0M, 32% of world exports), Germany ($710K) and the Netherlands ($653K). World exports came to about $3.3M, 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 382751?
In 2025, the top importers of HS code 382751 in UN Comtrade data were Germany ($2.0M, 37% of world imports), Austria ($513K) and China ($504K). World imports came to about $5.5M, 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 382751 structured?
HS code 382751 is a 6-digit subheading under the Harmonized System. The first 2 digits (38) identify the chapter, digits 3-4 (27) identify the heading, and digits 5-6 (51) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 382751?
In Brazil, HS code 382751 is NCM 3827.51.00. The last two digits are 00 because Brazil does not split this HS code further.