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Merck

431419

Phosphorus pentoxide

≥99.99% trace metals basis

Synonym(s):

Phosphoric anhydride, Phosphorus(V) oxide

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About This Item

Linear Formula:
P2O5
CAS Number:
Molecular Weight:
141.94
MDL number:
UNSPSC Code:
12352300
PubChem Substance ID:
EC Number:
215-236-1
NACRES:
NA.21
Assay:
≥99.99% trace metals basis
Form:
powder
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vapor density

4.9 (vs air)

Quality Segment

vapor pressure

1 mmHg ( 384 °C), 10 mmHg ( 238 °C)

assay

≥99.99% trace metals basis

form

powder

impurities

≤0.02% insolubles, <100 ppm total metallic impurities

mp

340 °C (lit.)

density

2.3 g/mL at 25 °C (lit.)

cation traces

NH4+: ≤0.01%, heavy metals: ≤0.01%

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

General description

Phosphorus pentoxide (P2O5) is a commonly used drying agent. It is a component of Eatons reagent, which is commonly used as a catalyst for dehydration reactions.

Application

Phosphorus pentoxide may be used in the synthesis of the following:
  • Hydroxyapatite (HA) sub-micron fibers.
  • Fluorescent carbon nanoparticles (FCNPs).
  • Bistetramethylammonium (TMA) hydrogencyclotriphosphate and rubidium cyclotetraphosphate using dimethyl sulfoxide as a solvent at low temperature condition.
  • Ethylene glycol methacrylate phosphate (EGMP), a UV-reactive phosphonic acid.

Features and Benefits

Meets A.C.S. reagent specifications.


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pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1A

supp_hazards

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves



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