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79609 Sigma-Aldrich

Phosphorus pentoxide

puriss. p.a., ACS reagent, ≥98.0% (T)

Synonym: Phosphoric anhydride, Phosphorus(V) oxide

  • CAS Number 1314-56-3

  • Linear Formula P2O5

  • Molecular Weight 141.94

  •  EC Number 215-236-1

  •  PubChem Substance ID 24887481

  •  NACRES NA.21

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Properties

Related Categories Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, O-P, Puriss p.a. ACS, Puriss p.a. ACS More...
Quality Level   200
grade   ACS reagent
vapor density   4.9 (vs air)
vapor pressure   1 mmHg ( 384 °C)
  10 mmHg ( 238 °C)
grade   puriss. p.a.
assay   ≥98.0% (T)
form   powder or crystals
impurities   ≤0.02% phosphorus trioxide (P2O3)
pH   1.5 (20 °C, 10 g/L)
mp   340 °C (lit.)
density   2.3 g/mL at 25 °C (lit.)
anion traces   chloride (Cl-): ≤10 mg/kg
  nitrate (NO3-): ≤5 mg/kg
cation traces   As: ≤100 mg/kg
  Ca: ≤10 mg/kg
  Cd: ≤5 mg/kg
  Co: ≤5 mg/kg
  Cr: ≤5 mg/kg
  Cu: ≤5 mg/kg
  Fe: ≤5 mg/kg
  K: ≤50 mg/kg
  Mg: ≤5 mg/kg
  Mn: ≤5 mg/kg
  NH4+: ≤10 mg/kg
  Na: ≤50 mg/kg
  Ni: ≤5 mg/kg
  Pb: ≤5 mg/kg
  Zn: ≤5 mg/kg
SMILES string   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
InChI key   YWEUIGNSBFLMFL-UHFFFAOYSA-N

Description

General description

Phosphorus pentoxide (P2O5) is a phosphorous oxide. It participates in Pictet-Gams synthesis. Phosphorus pentoxide supported on alumina has been used for solvent-free and microwave-assisted synthesis of 1, 5-benzodiazepine derivatives.

Application

Phosphorus pentoxide may be used in the synthesis of dichlorine heptoxide (Cl2O7).

Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
Supplemental Hazard Statements 
EUH014
RIDADR 
UN 1807 8 / PGII
WGK Germany 
WGK 1
RTECS 
TH3945000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Protocols & Articles
Peer-Reviewed Papers
15

References

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