... retardan,blowing agent 1,1,1,2-tetrafluoroethane(R134a),is used as refrigerant in automobile air-conditioning,household and commerrcial refrigant ... applicationgs. It can aslo be used as aerosol,flame retardan,and blowing agent in pharmaceutical,argo ... cylinder-13.6kg(30lbs) Refillable cylinder-400L,800L,926L,1000L r 134a refrigerant / refrigerant r134a