DESCRIPTION Maxron R-290 refrigerant gas is a brand-new product with a higher concentration of solvents that produce the highest proportion of refrigerant. If you use Maxron, the high concentration produces more cold air. It’s not just the best but it also saves you money. Physical and Chemical  Properties Appearance : Colorless, liquefied compressed gas Physical State: Gas at ambient temperature Odor: Odorless Solubility in Water: 0.0244 g/liter Boiling Point: -43.2 F (-41.79?C) Vapor Pressure : 109 psig Flash Point : -104?C (-155?F)