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Infrared absorption bands prevent heat at that wavelength from escaping Earth's atmosphere. CFCs have their strongest absorption bands from C-F and C-Cl bonds in the spectral region of 7.8–15.3 μm [14] —referred to as the "atmospheric window" due to the relative transparency of the atmosphere within this region. [15]
CFC-113 was one of the most heavily produced CFCs. In 1989, an estimated 250,000 tons were produced. [5] It has been used as a cleaning agent for electrical and electronic components. [12] CFC-113’s low flammability and low toxicity made it ideal for use as a cleaner for delicate electrical equipment, fabrics, and metals.
1,2-Dichlorotetrafluoroethane, or R-114, also known as cryofluorane , is a chlorofluorocarbon (CFC) with the molecular formula ClF 2 CCF 2 Cl. Its primary use has been as a refrigerant. It is a non-flammable gas with a sweetish, chloroform-like odor with the critical point occurring at 145.6 °C and 3.26 MPa. When pressurized or cooled, it is a ...
1-Chloro-1,2,2,2-tetrafluoroethane, C 2 H Cl F 4, is a hydrochlorofluorocarbon used as a component in refrigerants offered as replacements for chlorofluorocarbons. HCFC-124 is also used in gaseous fire suppression systems as a replacement for bromochlorocarbons .
1,1-Dichlorotetrafluoroethane is a chlorofluorocarbon also known as CFC-114a or R114a by American Society of Heating, Refrigerating, and Air Conditioning Engineers. [2] It has two chlorine atoms on one carbon atom and none on the other.
Chlorofluorocarbon, a class of chemical compounds; Cardiofaciocutaneous Syndrome, a rare and serious genetic disorder; Subpolar oceanic climate (Cfc in the Köppen climate classification), short, generally cool summers and long, mild winters with abundant precipitation year-round
Tetrachloro-1,2-difluoroethane is a chlorofluorocarbon known as Freon 112, CFC-112 or R-112. It has a symmetrical structure CCl 2 FCCl 2 F and so can be called symmetrical tetrachlorodifluoroethane. "Symmetrical" may also be abbreviated to "s-" or "sym-". In contrast an asymmetrical isomer has formula CCl 3 CClF 2.
Weaker absorption bands are at v7 at 578.0 and 577.4 cm −1, v6 at 844.9and 842.8 cm −1 and v1 at 3135.9 cm −1. [5] An estimate for radiative forcing potential is 0.098 W m 2 ppbv −1 and global warming potential is between 1.5 and 4.5 on 100 year time frame. [ 5 ]