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P2O5

Names IUPAC nameTetraphosphorus decaoxideTricyclo[3.3.1.1]tetraphosphoxane 1,3,5,7-tetraoxideSystematic IUPAC name2,4,6,8,9,10-Hexaoxa-1λ,3λ,5λ,7λ-tetraphosphatricyclo[3.3.1.1]decane 1,3,5,7-tetraoxideOther names Diphosphorus pentoxidePhosphorus(V) oxidePhosphoric anhydrideTetraphosphorus decaoxideTetraphosphorus decoxideIdentifiers CAS Number1314-56-3 (P2O5)16752-60-6 (P4O10)3D model (JSmol)molecular form: Interactive imagecrystal o′ form: Interactive imageChEBICHEBI:37376ChemSpider14128ECHA InfoCard100.013.852PubChemCID14812RTECS numberTH3945000UNII51SWB7223JCompTox Dashboard(EPA)DTXSID701335584 DTXSID9047754, DTXSID701335584InChIInChI=1S/O10P4/c1-11-5-12(2)8-13(3,6-11)10-14(4,7-11)9-12Key: DLYUQMMRRRQYAE-UHFFFAOYSA-NSMILESmolecular form: O=P13OP2(=O)OP(=O)(O1)OP(=O)(O2)O3crystal o′ form: P12(=O)OP3(=O)OP4(=O)OP5(=O)OP6(=O)OP(=O)(O1)OP7(=O)OP(=O)OP(=O)OP(=O)(O2)OP(=O)OP(=O)OP(=O)(O3)OP(=O)OP(=O)OP(=O)(O4)OP(=O)OP(=O)OP(=O)(O5)OP(=O)OP(=O)OP(=O)(O6)OP(=O)OP(=O)(O7)OProperties Chemical formulaP2O5Molar mass141.943 g·mol Appearance White powderVery deliquescentOdorOdorless Density2.3 g/cmMelting point562 °C (1,044 °F; 835 K) (sublimes) Boiling point605 °C (1,121 °F; 878 K) (if heated faster than sublimation can occur) Solubility in waterExothermic hydrolysis Vapor pressure1 Pa (0.00015 psi) (285 °C (545 °F), subl.)1 kPa (0.15 psi) (434.4 °C (813.9 °F), subl.)100 kPa (15 psi) (591 °C (1,096 °F))Thermochemistry Enthalpy of fusion(ΔfHfus)27.2 kJ⋅molHazards Occupational safety and health (OHS/OSH): Main hazardsReacts with water, strong dehydrating agent, corrosive.

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