Hydrocarbon refrigerants

For practitioners of the cooling system would have been familiar with the ingredients coolant / refrigerant such as: 

1. CFCs (chlorofluorocarbons) R-12. 
2 HCFCs (HydroChloroFluorCarbons) R-22. 
3 HFC (HydroFluorCarbons) R-134a. 

The third ingredient is a popular cooling synthetic coolants, R-12 and R-22 containing ozone-depleting substances and pose the highest heating. the use of R-134A to replace R-12 is highly recommended for refrigerators and car air conditioning, a halt to the production of Freon R-12 was replaced with Suva® 134a (product of DuPont ™) does not mean the problem has been completed since the R-134a is still causing global warming. 
touched on the environmentally friendly has actually been there even longer marketed and used materials from alternative refrigerant blend several types of natural gas and propane as Matane called coolants (refrigerant) Hydrocarbon, some of which are: 

1 HC 12 to replace the refrigerator and air conditioning refrigerant before the car uses R-12 (dichlorodifluoromethane) and R-134a (Tetrafluoroethane). 
2 HC 22 for the AC house or building previously used R-22 (CHLORODIFLUOROMETHANE). 
3 HC 502 and chiller for industrial use previously used R-502 (CHLORODIFLUOROMETHANE / Chloropentafluoroethane) etc, 

Hydrocarbon refrigerants have been widely circulated both foreign and domestic products (Musicool), this material is highly flammable so it requires extra handling when using it, hydrocarbon-based coolants do not require changes to the old system because it can be directly loaded and no need to replace existing oil but it is highly recommended to improve the security system to be able to anticipate the situation in case of leaks.