3827.31.00.00 - Containing substances of subheadings 2903.41 to 2903.48

This HTS classification, 3827.31.00.00, specifically covers mixtures that contain halogenated derivatives of methane, ethane, or propane, where these specific halogenated compounds are identified under subheadings 2903.41 to 2903.48. These subheadings primarily relate to chlorofluorocarbons (CFCs) and their isomers, including various types of fluorocarbons. The products classified here are therefore typically chemical formulations or preparations designed for specific industrial or commercial applications, but crucially, they *must not* contain chlorofluorocarbons (CFCs) themselves in a way that would direct them to a different classification.

It is important to distinguish this category from its siblings. HTS code 3827.32.00.00, for instance, is for mixtures containing hydrochlorofluorocarbons (HCFCs) derived from subheadings 2903.71 to 2903.75, focusing on a different set of halogenated hydrocarbons. The residual category, 3827.39.00.00, covers other mixtures that do not fall into the more specific criteria of 3827.31 or 3827.32. The key differentiator for 3827.31.00.00 is the presence of substances falling under the specific 2903.41 to 2903.48 range, while simultaneously excluding CFCs as the primary or defining characteristic of the mixture.

As this is a leaf node, there are no further subcategories. Therefore, the focus for classification under 3827.31.00.00 rests on precisely identifying the halogenated derivatives of methane, ethane, or propane within the mixture and ensuring they correspond to the chemical structures defined in subheadings 2903.41 through 2903.48, while also confirming the absence of CFCs. Examples of such products might include specialized refrigerants, blowing agents, or cleaning solvents whose chemical composition aligns with these specific fluorinated compounds.