bluon® Refrigerant, 25 lb Capacity, Composition: 1,1,1,2-Tetrafluoroethane, Difluoromethane, Pentafluoroethane, 1,1,1,2,3,3,3-Heptafluoropropane, 1,1,1,3,3,3-Hexafluoropropane, Proprietary Lubricant, Gas Form, Odor/Scent: Slight Ether, 1.18 Specific Gravity, 3.11 Vapor Density, -39.9 deg C Boiling Point, 93.1 psi at 20 deg C Vapor Pressure