An Isobutane (R600a) produced naturally from petrol gas presents the best replacement of R12 and any other refrigerant. It has a lower environmental impact with zero ODP and just 3 GWP. This on the scale of global warming is nothing which brings it to open its ocean of market expansion widely possible. R600a is becoming an immense popular refrigerant mostly used in domestic and small commercial refrigerants, including fridges, freezers, drink dispensers, stand-alone display unit, geothermal power generation, petrochemical industries, aerosol sprays and dehumidifiers. 

Its excellent thermodynamic performance, high critical temperature, environment friendliness pulls the market of Germany through such a strong magnet that 90% of its refrigerators comprise of R600A refrigerant.