2903.77.00.80 - Other

This HTS category, 2903.77.00.80, designated as "Other," encompasses halogenated derivatives of acyclic hydrocarbons that are perhalogenated solely with fluorine and chlorine, but which do not fall under the more specific preceding subheadings. These compounds are characterized by the presence of both chlorine and fluorine atoms attached to an acyclic hydrocarbon backbone, with no other halogens (like bromine or iodine) being present. Their utility often lies in their unique chemical and physical properties, which can include inertness, specific solvency characteristics, or performance as refrigerants or propellants, although many such uses are now restricted due to environmental regulations.

The key differentiator for this "Other" category lies in its exclusion of the explicitly listed compounds. For instance, it does not include Trichlorofluoromethane (2903.77.00.10), Trichlorotrifluoroethanes (2903.77.00.20), Dichlorotetrafluoroethane (CFC-114, 2903.77.00.30), Monochloropentafluoroethane (CFC-115, 2903.77.00.40), or Dichlorodifluoromethane (2903.77.00.50). Therefore, classification into 2903.77.00.80 requires a careful review to ensure the substance is perhalogenated with only fluorine and chlorine, is acyclic, and does not match any of the specific chemical structures defined in the preceding sibling subheadings.

As this is a terminal classification node, there are no further subdivisions. Classification into this category therefore relies on the precise chemical composition and the absence of specific properties or structures that would assign it to a more detailed subheading within the perhalogenated acyclic hydrocarbons containing only fluorine and chlorine. Importers and exporters should consult detailed chemical nomenclature and potentially analytical data to confirm that their product meets the criteria for this "Other" classification.