C2H3F3

C2H3F3 is the molecular formula for two constitutional isomers of difluorinated ethane: 1,1,1-trifluoroethane, with the structure CF3-CH3, and 1,1,2-trifluoroethane, with the structure CHF2-CH2F. Both have two carbon atoms connected by a single bond, and three fluorine atoms and three hydrogen atoms occupying the remaining valences.

In terms of composition, the two isomers differ in how the fluorine atoms are distributed across the two carbon centers. The 1,1,1-isomer places all three fluorine atoms on one carbon (CF3-CH3), while the 1,1,2-isomer distributes two fluorines on one carbon and one fluorine on the other (CHF2-CH2F). The two isomers are distinct chemicals and can exhibit different physical properties and reactivities.

Physically, compounds with this formula are typically colorless and exist as gases or volatile liquids at room temperature, depending on the isomer and pressure. They are fluorinated hydrocarbons and tend to be relatively nonpolar, with limited miscibility in water and greater solubility in organic solvents. They are generally chemically stable under ordinary handling conditions but can decompose under high temperatures or UV exposure and may release hazardous fluorinated fragments if mishandled.

Uses and handling are influenced by environmental and safety considerations. Fluorinated ethanes have historical use as intermediates in organic synthesis and, in some cases, as refrigerants or blowing agents, though regulatory and environmental concerns have affected their applications. Proper ventilation, containment, and adherence to applicable regulations are important when working with C2H3F3 isomers.

See also: trifluoroethane, fluorinated hydrocarbons, environmental impact of greenhouse gases.