Phosphorus pentoxide Phosphorus pentoxide is used as drying agent of gas and liquid; dehydrating agent in organic synthesis; antistatic agent of polyester resin; refining agent of drugs and sugar; raw material for manufacturing of high-purity phosphoric acid, phosphate, phosphide and phosphate; for manufacturing of phosphorus pentoxide sol and H type aerosol; for manufacturing of optical glass, uviol glass, heat-protecting glass, glass ceramics and emulsion opal glass.
