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79609

Sigma-Aldrich

Phosphorus pentoxide

puriss. p.a., ACS reagent, ≥98.0% (T)

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Synonym(s):
Phosphoric anhydride, Phosphorus(V) oxide
Linear Formula:
P2O5
CAS Number:
Molecular Weight:
141.94
EC Number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Quality Level

vapor density

4.9 (vs air)

vapor pressure

1 mmHg ( 384 °C)
10 mmHg ( 238 °C)

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

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1 of 4

This Item
796109021601.00540
vibrant-m

79609

Phosphorus pentoxide

vibrant-m

79610

Phosphorus pentoxide

vibrant-m

902160

Phosphorus pentoxide

vibrant-m

1.00540

di-Phosphorus pentoxide

assay

≥98.0% (T)

assay

-

assay

99%

assay

≥97.0% (acidimetric)

form

powder or crystals

form

powder, crystals or granules

form

powder

form

solid

anion traces

chloride (Cl-): ≤10 mg/kg, nitrate (NO3-): ≤5 mg/kg

anion traces

-

anion traces

-

anion traces

chloride (Cl-): 50 ppm

mp

340 °C (lit.)

mp

340 °C (lit.)

mp

340 °C (lit.)

mp

420 °C (closed capillary tube)

density

2.3 g/mL at 25 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

density

2.28 g/cm3 at 20-25 °C

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).

Pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1A

supp_hazards

Storage Class

8B - Non-combustible, corrosive hazardous materials

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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