Chlorofluorocarbon (CFC)/Hydrochlorofluorocarbon (HCFC)

CFC is a compound consisting of carbon, chlorine and fluorine; HCFC is a compound consisting of carbon, chlorine, fluorine and hydrogen. They are gaseous at ambient temperature and pressure and were used not so long ago as coolants in air conditioning units and as propellants in aerosol sprays. They deplete stratospheric ozone, thereby contributing to the greenhouse effect. Their manufacture and use are banned.