WebChlorofluorocarbon (CFC) is a gaseous compound made of three elements, carbon, chlorine and fluorine (and sometimes hydrogen). Manufacturers have used this compound to make cleaning solvents, refrigerants, and aerosol propellants, in some cases, even plastic foams. A few common products include Freon and other refrigerants. Web21 de out. de 1999 · Chlorofluorocarbons (CFCs) are heavier than air, ... (CF 4, produced mainly as a by-product of the manufacture of aluminum) and CFC-11 (CCl 3 F, used in a variety of human activities) ...

Causes Facts – Climate Change: Vital Signs of the Planet

Web27 de nov. de 2015 · Only above 100 km, segregation takes place because the concentration of light gases (e.g. helium) decreases more slowly with altitude than those of the heavy gases. The same atmospheric mixing processes apply to chlorofluorocarbons. For example, trichlorofluoromethane $ (\ce {CCl3F})$ is nearly uniformly distributed … Web9 de mar. de 2024 · Although chlorofluorocarbons are non-reactive and harmful in the troposphere, the UV found in the upper stratosphere breaks them down into compounds … billy saunders record

Ozone-Depleting Substances US EPA

WebA chlorofluorocarbon (CFC) is a gas used for various purposes including solvents, refrigerants, and aerosol sprays. They are organic chemicals and contain carbon, hydrogen, chlorine, and fluorine. They were much used in the middle of the 20th century, replacing chemicals that were toxic or flammable or had other problems. WebHow are chlorofluorocarbons produced? Chlorofluorocarbons: CFCs and HCFCs account for 84 percent of the chlorine penetrating the stratospheric, with alternative … WebIn order to aid the recovery of the stratospheric ozone layer, HFCs were adopted to replace the more potent chlorofluorocarbons (CFCs), which were phased out from use by the … cynthia chenault actor