... 22.7kg (50lbs)2.Applications:Chlorodifluoromethane (HCFC-22),a colorless gas at room temperature,is acolorless ,non - toxic,non-flammable ... material for PTFE productionand intermediate for Halon 1211 production.Refrigerant gas is used in household , industrial and commercial airconditioning systems ... ,r141b,r142b,r123,r152a,r125,r290,r401a,r408a,r409a,r415b,r417a,r502,r507a,r600a etc.In addition,we also ...