refrigerant gas R600A,foaming agent,can replace R12 replacement refrigerant gas R600A,foaming agent,can replace R12 Refrigerant R600a, chemical name: isobutane. Zero ODP and negligible GWP. Replace R12 R600a is the possible replacement for other refrigerants, which have high impact on environment in small hermetic systems, like factory made household and commercial refrigerator and freezer.It is ...