... , householdand commericial refrigerant applications. It can also be used as aerosol,flame retardan and blowing agent in pharmaceutical, agro-chemical,cos ... and commercial refrigerant applications. It can also be used as aerosol, flame retardan, and blowing agent in pharmaceutical, agro-chemical, cosmetics ... R12, replace the filter-drier, and charge R-134a. refrigerant refill