R-600a Isobutane Refrigerant Fact & Info Sheet

In the very beginning of refrigerants and air conditioning there were a select few refrigerants used. These refrigerants occurred naturally within our environment and were known as natural refrigerants. These included ammonia, carbon dioxide, water, and oxygen. Among these natural refrigerants under a subset category are what’s known as hydrocarbon refrigerants. Some examples of hydrocarbon refrigerants are propane, butane, ethyl, and isobutane.