... s a kind of colorless and transparent liquid, without suspended matter. Its boiling point is 40 deg; melting point is -97 deg. With the ... high purity 99, 99%, it can be used in industrial & pharm industry as a kind of refrigerating ... flexible PU foam, metal degreaser, oil dewaxing, mold discharging agent and decaffeination agent, and also in adhesive, agrochemical and film industry ...