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R134a is a replacement for R12.it is an inert gas used primariy as a"high-temperature" refrigerant for domestic refrgertion and automodileair-conditioners.

R404A is widely accepted as the refrigerant of choice over the majority of application range traditionally covered by R502 .Retrofitted refrigerant for R22 and R502.

is commonly used in the blending of R410A, R407C,etc. It can also be used as areplacement for R410Ain small air-conditioning systems.

R410A is widely accepted as the leading high-pressure alternative to R22 for air-conditioning and refrigerationapplications.              
R407C has been widely applied as a good match to the existing HCFC refrigerant R22 for use in air-conditioning, chilling and refrigeration systems. It was the first R22 alternative to be used on a commercial scale.    R22 is commonly used as a refrigerant in low-temp, med-temp air-conditioning system, propellantand blowing agent in construction field. R22 is a versatile intermediate in industrial organofluorine chemistry, e.g. as a precursor to tetrafluoroethylene.    
R600A is a substitute for R12. Concerns with depletion of the ozone layer by Freon gases have led to increased use of isobutane as a gas for refrigeration systems, especially in domestic refrigerators and freezers,and as a propellant in aerosol sprays.                




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