词条 | Diphosphorus tetroxide |
释义 |
| Verifiedfields = | Watchedfields = | verifiedrevid = | Name = Diphosphorus tetroxide | ImageFileL1 = | ImageSizeL1 = 150px | ImageNameL1 = | ImageFileR1 = | ImageSizeR1 = 150px | ImageNameR1 = | ImageFile2 = | ImageSize2 = 150 | OtherNames = Phosphorus tetroxide Phosphorus(V) oxide Phosphoric anhydride |Section1={{Chembox Identifiers | StdInChI = | StdInChIKey_Ref = {{stdinchicite|correct|chemspider}} | StdInChIKey = | ChEBI_Ref = | ChEBI = | SMILES = | CASNo_Ref = {{cascite|correct|CAS}} | CASNo = 12137-38-1 | CASNo2_Ref = {{cascite|changed|??}} | CASNo2 = | CASNo2_Comment = (P4O10) | PubChem =16131071 | ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}} | ChemSpiderID = | RTECS = |Section2={{Chembox Properties | Formula = P2O4 | MolarMass = 125.96 g·mol−1 | Appearance = Solid | Density = | Solubility = | MeltingPt = >100 °C | BoilingPtC = | VaporPressure =2.54 g·cm−3 }} |Section7={{Chembox Hazards | ExternalSDS = | EUClass = not listed | NFPA-H = | NFPA-R = | NFPA-F = | NFPA-S = }}Diphosphorus tetroxide, or phosphorus tetroxide is an inorganic compound of phosphorus and oxygen. It has the empirical chemical formula {{chem2|P2O4}}. Solid diphosphorus tetroxide (also referred to as phosphorus(III,V)-oxide) consists of variable mixtures of the mixed-valence oxides P4O7, P4O8 and P4O9.[1][2][3] PreparationPhosphorus tetroxide is obtainable by thermal decomposition of phosphorus trioxide: Phosphorus trioxide disproportionates above 210°C to form phosphorus and phosphorus tetroxide. In addition, phosphorus trioxide can be converted into phosphorus tetroxide by controlled oxidation with oxygen in carbon tetrachloride solution.[4][5][6] Careful reduction of phosphorus pentoxide with red phosphorus at 450-525 °C also produces the phosphorus tetroxide. References1. ^http://www.wiley.com/college/math/chem/cg/sales/voet.html. {{Phosphorus compounds}}2. ^{{cite book|author=Alberts B.|year=2002|title= Molecular Biology of the Cell, 4th Ed.|publisher= Garland Science|isbn=978-0-8153-4072-0|display-authors=etal}} 3. ^{{cite book|author=Voet D., Voet J. G.|title=Biochemistry, 3rd Ed.|publisher= Wiley|isbn=978-0-471-19350-0|date=2004-03-09}} 4. ^{{cite book|author=Atkins P., de Paula J.|year=2006|title=Physical chemistry, 8th Ed.|publisher= W. H. Freeman|place= San Francisco|isbn= 978-0-7167-8759-4}} 5. ^{{cite book |last1 = Petrucci |first1 = Ralph H. |last2 = Harwood |first2 = William S. |last3 = Herring |first3 = F. Geoffrey |date=2002 |title = General chemistry: principles and modern applications |edition=8th |location=Upper Saddle River, N.J |publisher=Prentice Hall |isbn = 978-0-13-014329-7 |lccn=2001032331 |oclc=46872308 |ref=harv }} 6. ^{{cite book|author=Laidler K. J.|year=1978|title=Physical chemistry with biological applications. Benjamin/Cummings|place= Menlo Park|isbn= 978-0-8053-5680-9}} 3 : Oxides|Inorganic phosphorus compounds|Solids |
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