R507R507 is a colorless gas under ordinary temperature, and a colorless & transparent liquid under the pressure of itself,mixed by R143 and R125. It is the substitute for R502, mainly used in the low temperature refrigerating systems.Properties:UnitR507Chemical formulaR-143/R-125Molecular weightg/mol98.86Melting point℃-46.7Critical temperature℃70.9Critical pressureMPa3.79Saturated liquid density (30℃)g/cm31.06Critical densityg/cm30.5ODP0GWP0.96Quality Specification:IndexExcellent GradeAppearanceColorless , not turbidodorNo strange stenchPurity % ≥99.8Moisture % ≤0.001Acidity (as HCl) % ≤0.00001Evaporation residue % ≤0.01Chlorides(Cl-) test % ≤0.0003No condensable gas (V/V) % ≤1.5Packing:11.3kg/30p steel cylinders or ISO TANK.It must be kept in cool, dry and well-ventilated places, away from sunshine and rainfall.