431419

Phosphorus pentoxide

≥99.99% trace metals basis

• Synonym(s): Phosphoric anhydride, Phosphorus(V) oxide
• Linear Formula: P₂O₅
• CAS Number: 1314-56-3
• Molecular Weight: 141.94
• EC Number: 215-236-1
• UNSPSC Code: 12352300
• PubChem Substance ID: 57650157
• NACRES: NA.21

Properties

• vapor density: 4.9 (vs air)
• Quality Level: 100
• 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

Description

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.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H314
• pcodes: P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363
• Hazard Classifications: Eye Dam. 1 - Skin Corr. 1A
• supp_hazards: EUH014
• Storage Class: 8B - Non-combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves