... widely used as pharmaceutical intermediates, polyurethane foaming agent / blowing agent to produce flexible pu foam, metal degreaser, oil dew ... film, polycarbonate, coating solvent, smoke propellant, polyurethane foams, parting agent and paint remover.It is ... , aerosol propellant, organic synthesis extractant, foaming agent in foam plastic (Eg: polyurethane) production, metal detergent, etc. Storage ...