Mixtures containing halogenated derivatives of methane — HTS 3827
Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included
Chapter 38 › Heading 3827
2026 HTS Rev 19 Synced Rules verified Operational
Written to help non-specialists understand this page. Rates, dates, and legal facts come from the official records above and on the linked source.
HTS heading 3827 is a broad product category for mixtures that contain halogenated derivatives of methane, ethane, or propane. These are chemicals made by replacing one or more hydrogen atoms in those gases with halogen elements such as fluorine, chlorine, bromine, or iodine. The heading is generally used when the mixture is not described more specifically elsewhere in the tariff.
The 4-digit heading is only the starting point. To reach the correct 8-digit HTSUS code, follow the subheadings and identify the mixture’s composition or chemical type, such as the relevant refrigerant or other halogenated compound grouping. Check the product’s formulation, technical name, and intended use, while confirming that no more-specific heading applies. The final classification can depend on the exact ingredients and proportions, so a customs broker or classification specialist may be needed for difficult products.
What to check
- Obtain the complete formulation, including each chemical ingredient and its proportion, from the manufacturer or supplier.
- Identify the chemical names, CAS numbers, and whether the ingredients are halogenated derivatives of methane, ethane, or propane.
- Read every subheading under 3827 and match the mixture to the description based on composition or chemical type—not just its brand or trade name.
- Confirm that another HTSUS heading does not describe the product more specifically, and check any chapter or section notes that affect classification.
- Keep technical data sheets, safety data sheets, labels, and supplier statements supporting the selected 8-digit code; request professional advice when the formulation or heading choice is uncertain.
HTS heading 3827 summary
Mixtures containing halogenated derivatives of methane is a 4-digit product category containing 6 published product-code lines in this snapshot. A heading does not carry one universal duty rate; classification must be narrowed to the line matching the product facts.
How to find your code in this category
A heading is a product category. To get the exact duty, narrow from this 4-digit heading to a sub-category (usually by material), then open the 8-digit code that matches your product.
Open any code in the tables below to see its exact duty rate, a duty calculator (enter your shipment value → estimated duty and landed cost), the rate-change history chart, and the country-by-country breakdown (including Section 301/232 add-on duties).
Why you have to click in: a single category can contain products with very different duties. The rate depends on the specific product — its material and construction — and on the country of origin, and those only get pinned down at the 8-digit code level. That is why this page points you to codes instead of showing one rate for the whole category.
Sub-categories
| Code | Description |
|---|---|
| 3827.90 | Other |
Product codes & duty rates
👇 Each row is a specific product code — click a blue code to open its full page with exact duty rates by country, the rate-history chart, and a duty calculator. 👉
| Code | Description | General (MFN) | Special | Column 2 |
|---|---|---|---|---|
| 3827.11.00.00 👉 | Containing chlorofluorocarbons (CFCs), whether or not containing hydrochlorofluorocarbons (HCFCs), perfluorocarbons (PFCs) or hydrofluorocarbons (HFCs) | 3.7% | Free | 25% |
| 3827.12.00.00 👉 | Containing hydrobromofluorocarbons (HBFCs) | 3.7% | Free | 25% |
| 3827.13.00.00 👉 | Containing carbon tetrachloride | 6.5% | Free | 114.5% |
| 3827.14.00.00 👉 | Containing 1,1,1-trichloroethane (methyl chloroform) | 6.5% | Free | 114.5% |
| 3827.20.00.00 👉 | Containing bromochlorodifluoromethane (Halon-1211), bromotrifluoromethane (Halon-1301) or dibromotetrafluoroethanes (Halon-2402) | 3.7% | Free | 25% |
| 3827.40.00.00 👉 | Containing methyl bromide (bromomethane) or bromochloromethane | 3.7% | Free | 25% |
"Special" shows the free-trade-agreement rate; open a code to see exactly which countries qualify.
Common questions
What products fall under HTS heading 3827?
Mixtures containing halogenated derivatives of methane, ethane or propane, not elsewhere specified or included. To classify a specific item you must pick the matching sub-category and 8-digit code above; the right choice usually depends on the material and construction of the product.
How do I choose the right code within this category?
Start from the sub-categories (typically divided by material—for example cotton versus man-made fibers), then open the active 8- or 10-digit code that matches the product. When unsure, a licensed customs broker or a CBP binding ruling can confirm the classification.
Reference information only, not customs, legal, or classification advice. Confirm the current code and rate against the official HTS before you import.