2903.43.10.00 - Fluoromethane (HFC-41), 1,2-difluoroethane (HFC-152) and 1,1-difluoroethane (HFC-152a)

This HTS category encompasses specific fluoromethane and difluoroethane compounds, identified by their chemical names and common HFC designations. These are saturated, acyclic hydrocarbons where hydrogen atoms have been replaced by fluorine. The covered substances include Fluoromethane (HFC-41), 1,2-difluoroethane (HFC-152), and 1,1-difluoroethane (HFC-152a). Their primary applications are often as refrigerants, propellants, or blowing agents, distinguished by their particular molecular structures and thermodynamic properties.

To accurately classify within this group, it is crucial to differentiate these compounds from their siblings, which are also saturated fluorinated derivatives of acyclic hydrocarbons but possess different molecular compositions. For example, sibling categories include trifluoromethane (HFC-23), difluoromethane (HFC-32), and various tetrafluorinated or heptafluorinated ethanes and propanes. The key distinguishing factor lies in the number and arrangement of fluorine and hydrogen atoms on the ethane or methane backbone, which directly impacts the chemical and physical properties of each substance.

As this is a leaf node, there are no further subdivisions within this specific classification. Therefore, accurate classification relies on precise identification of the chemical substance based on its name and HFC designation to ensure it matches the defined parameters of Fluoromethane (HFC-41), 1,2-difluoroethane (HFC-152), and 1,1-difluoroethane (HFC-152a). When making classifications, it is important to consult technical data sheets or certificates of analysis to confirm the exact chemical identity and composition.