Information about the Australia-wide program by Refrigerant Reclaim Australia (RRA) to take back used and unwanted refrigerant in order to prevent its emission into the atmosphere, as well as instructions on how to dispose of contaminated or unusable refrigerant. Hydrocarbon refrigerant include: R290 – Propane, R600 – butane, R600a – Isobutane. Flammable HCFC/HFC/HFO refrigerants include: R32, R40, R142b, R143a, R152a, R1234yf, R1234ze.