1,1,2,2-tetrafluoroethane is a chemical compound with the formula C2H2F4. It is a colorless gas at room temperature and is commonly used as a refrigerant in air conditioning systems and refrigeration applications. This compound is part of the hydrofluorocarbon (HFC) family, which are known for their effectiveness in heat transfer. Due to its low ozone depletion potential, 1,1,2,2-tetrafluoroethane is considered a more environmentally friendly alternative to older refrigerants like chlorofluorocarbons (CFCs). However, it is a potent greenhouse gas, which raises concerns about its impact on climate change.