1,1,1-Trifluoroethane

1,1,1-Trifluoroethane, also known as R-143a, is a hydrofluorocarbon (HFC) and halocarbon commonly used as a refrigerant. It is a colorless gas with a faint ethereal odor.

Chemical Properties

1,1,1-Trifluoroethane is a fluorocarbon, part of the family of compounds known as hydrofluorocarbons (HFCs). It has the chemical formula C2H3F3 and a molecular weight of 84.04 g/mol. It is a non-flammable gas at room temperature and pressure. It has a boiling point of -47.6°C and a melting point of -111°C.

Uses

1,1,1-Trifluoroethane is primarily used as a refrigerant in air conditioning and refrigeration systems. It is also used as a propellant for aerosols, as a blowing agent for foams, and as a cleaning agent. It is a replacement for chlorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), which are being phased out due to their ozone-depleting potential.

Health Effects

Exposure to 1,1,1-Trifluoroethane can cause dizziness, nausea, and headache. High levels of exposure can lead to loss of consciousness and even death. It can also cause frostbite on contact with the skin or eyes.

Environmental Impact

While 1,1,1-Trifluoroethane is not an ozone-depleting substance, it is a potent greenhouse gas. It has a global warming potential (GWP) of 4300, which is significantly higher than that of carbon dioxide.

See Also

• Hydrofluorocarbons
• Refrigerant
• Greenhouse gas