2903.44.10 - Pentafluoroethane (HFC-125), 1,1,1-trifluoroethane (HFC-143a) and 1,1,2-trifluoroethane (HFC-143)

This HTS category, 2903.44.10, specifically covers certain saturated fluorinated derivatives of acyclic hydrocarbons, namely pentafluoroethane (HFC-125), 1,1,1-trifluoroethane (HFC-143a), and 1,1,2-trifluoroethane (HFC-143). These compounds are characterized by the presence of fluorine atoms attached to an ethane backbone. They are primarily utilized as refrigerants, propellants, and foam-blowing agents in various industrial and commercial applications.

Distinguishing this classification from its siblings, the other categories within 2903.4x.xx focus on fluorinated hydrocarbons with different degrees of fluorination or different carbon chain lengths. For example, siblings like 2903.41.10.00 and 2903.42.10.00 cover simpler fluoromethanes and difluoroethanes. Furthermore, sibling categories such as 2903.45.10.00 and 2903.46.10.00 address tetrafluoroethanes and more complex heptafluoropropane and hexafluoropropane compounds, respectively. This particular category is reserved for the specified pentafluoroethane and trifluoroethane isomers, based on their unique chemical structures and corresponding properties.

The subcategories under 2903.44.10 provide further granular classification based on the specific isomer. These include 2903.44.10.10 for 1,1,1,2,2-pentafluoroethane (HFC-125), 2903.44.10.20 for 1,1,1-trifluoroethane (HFC-143a), and 2903.44.10.30 for 1,1,2-trifluoroethane (HFC-143). This detailed breakdown is essential for accurate reporting and for tracking trade in these specific chemical compounds, each possessing distinct physical and chemical properties that dictate their applications and potential environmental impacts.