2903.77.00.10 - Trichlorofluoromethane

This HTS category encompasses Trichlorofluoromethane, a specific halogenated derivative of acyclic hydrocarbons. It falls under the broader classification of compounds containing at least two different halogens, and more specifically, those that are perhalogenated solely with fluorine and chlorine. Trichlorofluoromethane, commonly known as CFC-11, is a significant compound within this group due to its historical use in refrigerants, propellants, and solvents. The defining characteristic for this classification is the precise chemical composition of three chlorine atoms and one fluorine atom attached to a single carbon atom.

Distinguishing Trichlorofluoromethane from its sibling categories requires a focus on the number and type of halogen atoms present and their arrangement within the hydrocarbon structure. For instance, while Trichlorotrifluoroethanes, Dichlorotetrafluoroethane, and Monochloropentafluoroethane all contain fluorine and chlorine, they differ in their carbon chain length and the exact stoichiometry of these halogens. The category "Other" at this level would capture perhalogenated compounds with only fluorine and chlorine that do not fit the specific chemical identities of the other listed siblings.

As this HTS code represents a leaf node, there are no further subdivisions within this specific classification. Therefore, the emphasis for classification purposes lies on accurately identifying Trichlorofluoromethane based on its chemical formula and properties, ensuring it is correctly distinguished from other closely related halogenated hydrocarbons listed at the same hierarchical level. The classification hinges on the precise molecular structure and the presence of three chlorine and one fluorine atom on a single carbon atom, excluding other isomers or compounds with different halogen ratios.