Phosphorous Pentoxide (P2O5)
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Classification of hazardous materials: GB8.1-81063. IMDG CODE p8198,8
Use: in synthesis of phosphorus oxychloride, metaphosphoric acid; in manufacture of acrylate, surface active agent; in refining of drugs and sugar; as dehydrating agent, desiccant, antistatic agent; analytical reagent.
CAS NO. :1314-56-3
UN NO. :1807
Properties: White crystals, very deliquescent, density 0.9g/cm3, mp. 580-585C, sublimation temperature 300C, vapor pressure 133.3Pa (384C) . May transform to amorphous from under elevated temperature and pressure. Readily absorbs moisture from. Exothermic hydrolysis by water to yield phosphoric acid.