R600aR600a is a HFC and CFC free refrigerant, providing the most environmentally friendly refrigerant available. It is extremely energy efficient, and has high cooling ability, low electricity waste.Properties:IndexUnitR600aChemical formulaC4H10Molecular weightg/mol58.12Critical temperature℃134.98Critical pressureKPa3660Saturated liquid density (25℃)Kg/m3551Specific heat (25℃liquid)KJ/kg·k2.38Critical densityg/cm30.221Vaporization heat at boiling pointKJ/kg366.5ODP0GWP0.1Quality Specification:IndexGrade ⅠAppearanceColorless & not turbidodorNo strange stenchPurity % ≥99.5Moisture ppm % ≤0.001Acidity (as HCl) ppm % ≤0.0001Evaporation residue ppm % ≤0.01Packing:20kg/40L, 460kg/926L, returnable steel cylinders.