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Trichlorotrifluoroethane, also known by its chemical formula C2Cl3F3, is a halocarbon refrigerant commonly referred to as R-113. It belongs to the class of chlorofluorocarbons (CFCs) and is used as a refrigerant in various applications, particularly in older refrigeration systems and air conditioning units.

Here’s a breakdown of its components:

  1. Chlorine (Cl): Trichlorotrifluoroethane contains chlorine atoms, which contribute to its refrigerant properties. Chlorine is a halogen element that, when combined with other elements in the molecule, helps impart desirable thermodynamic properties to the refrigerant.
  2. Fluorine (F): Fluorine atoms are also present in trichlorotrifluoroethane. Fluorine is another halogen element that, when combined with chlorine and ethane, contributes to the refrigerant’s stability, efficiency, and performance.
  3. Ethane (C2H6): Ethane is a simple hydrocarbon compound consisting of two carbon atoms and six hydrogen atoms. In trichlorotrifluoroethane, ethane serves as the backbone of the molecule, providing structural integrity and stability.

Trichlorotrifluoroethane (R-113) was widely used as a refrigerant in the past due to its favorable thermodynamic properties, including high stability, low flammability, and good heat transfer characteristics. However, its use has significantly decreased in recent years due to its contribution to ozone depletion and its high global warming potential (GWP). As a result, R-113 has been largely phased out and replaced with more environmentally friendly refrigerants, such as hydrochlorofluorocarbons (HCFCs) and hydrofluorocarbons (HFCs), in newer refrigeration systems and air conditioning units.

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