What are CFCs easy definition?
: any of several simple gaseous compounds that contain carbon, chlorine, fluorine, and sometimes hydrogen, that are used as refrigerants, cleaning solvents, and aerosol propellants and in the manufacture of plastic foams, and that are believed to be a major cause of stratospheric ozone depletion —abbreviation CFC.
What are CFCs and how are they harmful?
Chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs) and halons destroy the earth’s protective ozone layer, which shields the earth from harmful ultraviolet (UV-B) rays generated from the sun. CFCs and HCFCs also warm the lower atmosphere of the earth, changing global climate.
What are the uses of CFCs?
Chlorofluorocarbons (CFCs) are largely used as refrigerants, solvents, degreasing agents in the electronic industry, blowing agents in plastic formation and propellants for aerosol cans.
What are CFCs and why were they produced?
CFCs were developed as ideal gases used as refrigerants for refrigerators. Because of their special characteristics, inflammability and non-toxicity to human beings, CFCs were massively produced and consumed, particularly in developed countries, after the 1960’s.
What are CFCs Class 5?
Chlorofluorocarbons (CFC) are gases used for various purposes including solvents, refrigerants and aerosol sprays. They are organic chemicals and contain carbon, (sometimes hydrogen,) chlorine, and fluorine.
What are examples of CFC?
3.2 Chlorofluorocarbon (CFC) Propellants. Examples of CFC propellants are trichlorofluoromethane (CCl3F, Propellant 11); dichlorodifluoromethane (CCl2F2; Propellant 12); and 1,2-dichloro-1,1,2,2-tetrafluoroethane (ClF2C–CClF2, Propellant 114).
Is CFC poisonous?
Safety. According to their material safety data sheets, CFCs and HCFCs are colorless, volatile, non-toxic liquids and gases with a faintly sweet ethereal odor.
Is CFC a greenhouse gas?
The compounds that only contain carbon, chlorine, and fluorine are called chlorofluorocarbons (CFCs). Chlorofluorocarbons are exceptionally strong greenhouse gases and are also responsible for the destruction of stratospheric ozone.
Is CFC harmful to humans?
Although CFCs are benign in low concentrations, high concentrations can affect the heart, central nervous system, liver, kidneys and lungs, and extremely high levels can kill. Of more concern, however, are the possible consequences of ozone depletion and global warming.
What are CFCs Class 9?
Where are CFCs found?
Chlorofluorocarbons (CFCs) are anthropogenic compounds that have been released into the atmosphere since the 1930s in various applications such as in air-conditioning, refrigeration, blowing agents in foams, insulations and packing materials, propellants in aerosol cans, and as solvents.
Do CFCs smell?
Safety. According to their material safety data sheets, CFCs and HCFCs are colorless, volatile, non-toxic liquids and gases with a faintly sweet ethereal odor. Overexposure at concentrations of 11% or more may cause dizziness, loss of concentration, central nervous system depression or cardiac arrhythmia.