Phosphorus pentoxide
SIAL/79609 - puriss. p.a., ACS reagent, ≥98.0% (T)
Synonym: Phosphoric anhydride; Phosphorus(V) oxide
CAS Number: 1314-56-3
Empirical Formula (Hill Notation): O5P2
Molecular Weight: 141.94
EC Number: 215-236-1
MDL Number: MFCD00148880
Linear Formula: P2O5
Product Type: Chemical
| anion traces | chloride (Cl-): ≤10 mg/kg |
| nitrate (NO3-): ≤5 mg/kg | |
| assay | ≥98.0% (T) |
| 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 | |
| Na: ≤50 mg/kg | |
| NH4+: ≤10 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| density | 2.3 g/mL at 25 °C (lit.) |
| form | powder or crystals |
| grade | ACS reagent |
| puriss. p.a. | |
| impurities | ≤0.02% phosphorus trioxide (P2O3) |
| InChI | 1S/O10P4/c1-11-5-12(2)8-1 |
| InChI key | YWEUIGNSBFLMFL-UHFFFAOYSA |
| mp | 340 °C (lit.) |
| pH | 1.5 (20 °C, 10 g/L) |
| Quality Level | 200  |
| SMILES string | O=P12OP3(=O)OP(=O)(O1)OP( |
| vapor density | 4.9 (vs air) |
| vapor pressure | 1 mmHg ( 384 °C) |
| 10 mmHg ( 238 °C) |
| Application: | Phosphorus pentoxide may be used in the synthesis of dichlorine heptoxide (Cl2O7). |
| 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. |
| Symbol |  GHS05 |
| Signal word | Danger |
| Hazard statements | H314 |
| Precautionary statements | P280 - P303 + P361 + P353 - P305 + P351 + P338 + P310 |
| Hazard Codes | C |
| Risk Statements | 35 |
| Safety Statements | 22-26-45 |
| RIDADR | UN 1807 8 / PGII |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Supplemental Hazard Statements | EUH014 |
| Purity | ≥98.0% (T) |
| mp | 340 °C (lit.) |
| Density | 2.3 g/mL at 25 °C (lit.) |
| UNSPSC | 12352303 |