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79609

Sigma-Aldrich

Phosphorus pentoxide

puriss. p.a., ACS reagent, ≥98.0% (T)

Synonym(s):

Phosphoric anhydride, Phosphorus(V) oxide

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About This Item

Linear Formula:
P2O5
CAS Number:
1314-56-3
Molecular Weight:
141.94
EC Number:
215-236-1
UNSPSC Code:
12352303
PubChem Substance ID:
24887481
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Quality Level

200

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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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
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1A

Supplementary Hazards

EUH014

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

危险化学品

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Eagleson M.
Concise Encyclopedia Chemistry, 215-215 (1994)
Radek Pohl et al.
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Systematic structure-activity studies on a diverse family of nucleoside phosphonic acids has led to the development of potent antiviral drugs such as HPMPC (CidofovirTM), PMEA (AdefovirTM), and PMPA (TenofovirTM), which are used in the treatment of CMV-induced retinitis, hepatitis B
Jae-Hyung Ahn et al.
Microbial ecology, 68(2), 271-283 (2014-04-01)
The effects of water-saving irrigation on emissions of greenhouse gases and soil prokaryotic communities were investigated in an experimental rice field. The water layer was kept at 1-2 cm in the water-saving (WS) irrigation treatment and at 6 cm in
Alumina/phosphorus pentoxide (APP) as an efficient reagent for the synthesis of 1, 5-benzodiazepines under microwave irradiation.
Kaboudin B and Navaee K.
Heterocycles, 1443-1446 (2001)
Eagleson M.
Concise Encyclopedia Chemistry, 836-836 (1994)
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