| 摘要 |
PURPOSE:To provide a working fluid reduced in the affection thereof on the ozone layer in the stratosphere and employed in a freezers, heat pumps, etc., by containing chlorodifluoromethane, dichlorotrifluoroethane and dichlorofluoroethane in specific amount, respectively. CONSTITUTION:The objective working fluid contains at least three kinds of 50-90wt.%, preferably 50-90wt.% of chlorodifluoromethane (R22), <=50wt.% of dichlorotrifluoroethane (R123) and <=45wt.% of dichlorofluoroethane (R141b). |
