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Phosphorus(V) oxide

Catalog No. A13348 Name Alfa Aesar
CAS Number 1314-56-3 Website
M. F. O5P2 Telephone
M. W. 141.944522 Fax
Purity 98% Email
Storage Chembase ID: 295282

SYNONYMS

Title
氧化磷(V)
IUPAC name
diphosphooxidane
IUPAC Traditional name
diphosphooxidane
Synonyms
Phosphorus pentoxide

DATABASE IDS

Merck Index 147355
CAS Number 1314-56-3
EC Number 215-236-1
MDL Number MFCD00011440

PROPERTIES

Purity 98%
Boiling Point 360°C subl.
Density 2.39
Melting Point 340°C
GHS Pictograms GHS05
GHS Hazard statements H314
European Hazard Symbols Corrosive Corrosive (C)
GHS Precautionary statements P260-P303+P361+P353-P305+P351+P338-P301+P330+P331-P405-P501A
Risk Statements 35
RTECS TH3945000
Safety Statements 22-26-45
Storage Warning Moisture Sensitive
TSCA Listed
Hazard Class 8
UN Number UN1807
Packing Group II

DETAILS

REFERENCES

  • For use with Dimethoxymethane, A12055, in the protection of alcohols as their methoxymethyl (MOM) ethers, avoiding the carcinogenic chloromethyl methyl ether, see: Synthesis, 276 (1975); Org. Synth. Coll., 9, 539 (1998).
  • One of the most efficient drying agents which is used in various dehydrations and related reactions.
  • Several lower viscosity alternatives to the useful dehydration and cyclization agent polyphosphoric acid (PPA) can be prepared from phosphorus pentoxide:
  • Reaction with ether in chloroform gives polyphosphoric ester, PPE: Biochem. Biophys. Acta., 80, 1 (1964). The chloroform solution is mobile and useful for dehydrations such as: The Bischler-Napieralski reaction (see 2-Phenylethylamine, A13402), and related reactions: Tetrahedron Lett., 2419 (1964); the Fischer indole synthesis (see Phenylhydrazine, A11246): Chem. Ind. (London), 473 (1965); the direct, high-yield formation of thiocarboxylic esters by reaction between the carboxylic acid and the thiol: Synthesis, 134 (1982).
  • For use of P2O5 in the formation of TMS polyphosphate, see Hexamethyldisiloxane, A11848. See also Eaton's Reagent, L15607.