Phosphorus pentoxide

Product Name

Phosphorus pentoxide, puriss. p.a., ACS reagent, ≥98.0% (T)

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

SMILES string

O=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3

grade

ACS reagent
puriss. p.a.

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

Quality Level

200