Refrigerant-141b 

R-141b, also known as 1,1-difluoroethane, is a hydrochlorofluorocarbon (HCFC) refrigerant that was used in some refrigeration and air conditioning systems in the past. However, due to its high ozone depletion potential, it has been phased out under the Montreal Protocol and is no longer used in new equipment.

R-141b is a Class 2 ozone-depleting substance and it has a global warming potential (GWP) of around 760. This means that it has a high potential to contribute to the depletion of the ozone layer and to climate change.

As a replacement of R-141b, the industry has adopted HFC and HFO refrigerant, which have zero ozone depletion potential and much lower global warming potentials. HFCs such as R-134a, R-404A and R-407C or HFOs such as R-1234yf are common replacement for R-141b

If you are using equipment that contains R-141b, it is important to properly maintain the equipment to minimize leakage and to properly recover, recycle, and dispose of the refrigerant when it needs to be serviced. It is also important to follow all local and federal regulations regarding the handling and disposal of ozone-depleting substances.

It's also important to keep in mind that, because of the ODP and GWP, R-141b is not a suitable refrigerant for new equipment and it's not recommended to be used in any new equipment. 

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