1.a kind of refrigerant of surrounds-protection model, 2.used in replacing R22 R502, 3.cleaning, low poison. ... R-407C is a kind of refrigerant of surrounds-protection model, used in replacing R22 R502. It has a good nature ... .001Acidity, ≤ %: 0.0001Residue on evaporation, ≤ %: 0.01Non-congealing gas in gas-phase, ≤ %: 1.5Packing: 11.3kg, 500kg, 870kg, ISOTANK