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Phosphorus(V) oxide is used as a drying and dehydrating agent, a condensation reagent in organic synthesis and a laboratory reagent. It is also used in sugar refining and in fire extinguishing. Phosphorus pentoxide in DMSO forms an Onodera reagent which oxidizes alcohols. It is capable of converting mineral acids to anhydrides.
Meier, M. S. Phosphorus(V) Oxide. In Encyclopedia of Reagents for Organic Synthesis; Pacquette, L., Ed.; J. Wiley & Sons, New York, 2004.Ebadi, M.; Mirdamadian, Z.; Ghanbari, D.; Moradi, L. The Effect of Aminated Carbon Nanotube and Phosphorus Pentoxide on the Thermal Stability and Flame Retardant Properties of the Acrylonitrile-Butadiene-Styrene. J. Cluster Sci. 2014, 25 (2), 541-548.
Hazard Statements: H314
Causes severe skin burns and eye damage.
Precautionary Statements: P260u-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501a
Do not breathe dusts or mists. IF ON SKIN (or hair): Remove/Take off immediately all contaminated clothing. Rinse skin with water/shower. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.