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902160

Sigma-Aldrich

Phosphorus pentoxide

anhydrous, free-flowing, Redi-Dri™, ReagentPlus®, 99%

Synonyme(s) :

Phosphoric anhydride, Phosphorus(V) oxide

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About This Item

Formule linéaire :
P2O5
Numéro CAS:
1314-56-3
Poids moléculaire :
141.94
Code UNSPSC :
12352303
ID de substance PubChem :
24852847
Nomenclature NACRES :
NA.21

Qualité

anhydrous
free-flowing

Densité de vapeur

4.9 (vs air)

Pression de vapeur

1 mmHg ( 384 °C)
10 mmHg ( 238 °C)

Gamme de produits

ReagentPlus®
Redi-Dri™

Pureté

99%

Forme

powder

pH

1.5 (20 °C, 10 g/L)

Pf

340 °C (lit.)

Densité

2.3 g/mL at 25 °C (lit.)

Traces de cations

As: ≤100 mg/kg
Fe: ≤100 mg/kg
heavy metals (as Pb): ≤0.02%

Chaîne SMILES 

O=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3

InChI

1S/O10P4/c1-11-5-12(2)8-13(3,6-11)10-14(4,7-11)9-12

Clé InChI

YWEUIGNSBFLMFL-UHFFFAOYSA-N

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Catégories apparentées

Description générale

Phosphorus pentoxide is a deliquescent compound prepared by reacting phosphorus with air. It is a commonly used as dehydrating and condensing agent in organic synthesis.

Application

Dehydrating agent used for halogenation with tetrabutylammonium halides.

Process for Producing Halogenated Heteroaryl Compounds
Phosphorus pentachloride has been used for the vaccum distillation of 1-methyl-2-pyrrolidinone (NMP), which was employed as mobile phase in a chromatographic analysis.

It may be used as one of the reaction components in the synthesis of dichlorine heptoxide (Cl2O7) and transition-metal phosphides (Ni2P, Co2P and MoP). P2O5 supported on alumina can be used for the solvent-free and microwave-assisted preparation of 1, 5-benzodiazepine analogs. P2O5/KX (X = Br, I) reagent system may be used for the transformation of alcohols into the corresponding alkyl iodides and bromides.
Phosphorus pentoxide/methanesulfonic acid (PPMA) may be used as a condensing agent and solvent for the synthesis of:
  • High molecular weight poly(benzoxazole)s via direct polycondensation of aromatic dicarboxylic acids containing phenyl ether structure with 3,3′-dihydroxybenzidine dihydrochloride.
  • Aromatic poly(phenylene ether ether ketone)s via direct self-polycondensation of 4-(4′-phenoxyphenoxy)benzoic acids.
  • 1,3-1H-dibenzimidazole-benzene by the reaction of isophthalic acid with 1,2-diaminobenzene.

Informations légales

ReagentPlus is a registered trademark of Merck KGaA, Darmstadt, Germany
Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Pictogrammes

Corrosion
GHS05

Mention d'avertissement

Danger

Mentions de danger

H314

Classification des risques

Eye Dam. 1 - Skin Corr. 1A

Risques supp

EUH014

Code de la classe de stockage

8B - Non-combustible corrosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Certificats d'analyse (COA)

Lot/Batch Number
MKCF7546

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Consulter la Bibliothèque de documents

An efficient and selective method for the iodination and bromination of alcohols under mild conditions.
Khazdooz L, et al.
Tetrahedron Letters, 57(2), 168-171 (2016)
Kinetics of melting and crystallization of phosphorus pentoxide.
Cormia RL, et al.
Journal of Applied Physics, 34(8), 2239-2244 (1963)
Synthesis of aromatic poly (ether ketone) s in phosphorus pentoxide/methanesulfonic acid.
Ueda M and Oda M.
Polymer Journal, 21(9), 673-679 (1989)
Mechanical mixtures of metal oxides and phosphorus pentoxide as novel precursors for the synthesis of transition-metal phosphides.
Guo L, et al.
Dalton Transactions, 45(3), 1225-1232 (2016)
Sulfonated polysulfone with 1, 3-1H-dibenzimidazole-benzene additive as a membrane for direct methanol fuel cells.
Fu Y, et al.
Journal of Membrane Science, 310(1), 262-267 (2008)
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