Phosphorus pentoxide CAS#1314-56-3

Phosphorus pentoxide CAS#1314-56-3

Strong Dehydrating Capability: Highly hygroscopic and easily deliquescent, making it an extremely effective drying and dehydrating agent.


High Thermal Stability: Exhibits a high melting point (580–585 °C) and stable performance under elevated temperatures, suitable for high-temperature applications.


Phase Versatility: Can transition from crystalline form to amorphous glass upon heating under pressure, offering flexibility in different processing conditions.


Selective Solubility Characteristics: Insoluble in acetone and ammonia but soluble in sulfuric acid, allowing controlled application in specific chemical systems.

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product description

Product Description of Phosphorus pentoxide CAS#1314-56-3

Phosphorus pentoxide, or phosphoric anhydride, is a phosphorus oxide made by burning phosphorus in dry air. It is highly deliquescent white powder or colorless monoclinic crystal at room temperature.

It melts at 580–585°C, sublimes at 347°C with relative density 2.39, and turns into glassy form under pressure at 563°C. It dissolves in sulfuric acid, yet insoluble in acetone and ammonia.


Product Application of Phosphorus pentoxide CAS#1314-56-3

Phosphorus pentoxide is widely used as desiccant, dehydrant, organic condensation agent and lab reagent, also for sugar refining and fire suppression.

Dissolved in DMSO, it forms Onodera reagent for alcohol oxidation. It can also convert mineral acids into corresponding acid anhydrides.
Product Information

Parameters


Melting point340 °C (lit.)
Boiling point122 °C (1 mmHg)
Bulk density700kg/m3
Density2.3 g/mL at 25 °C (lit.)
Vapor density4.9 (vs air)
Vapor pressure1 mm Hg ( 384 °C)
Refractive index1.433-1.436
Fp340-360°C
Storage tempno restrictions.
SolubilitySoluble in sulfuric acid. Insoluble in acetone and ammonia.
FormVery Deliquescing Powder
ColorWhite
Specific Gravity2.39
OdorPungent odour
PH1 (5g/l, H2O, 20℃)
PH Range<2
Water SolubilitySoluble in sulfuric acid. Insoluble in acetone and ammonia. Decomposes in water.
SensitiveMoisture Sensitive
Merck147355
crystal systemThree sides
Sublimation340-360 ºC
Space groupR3c
Lattice constanta/nmb/nmc/nmα/oβ/oγ/oV/nm31.030351.030351.3510290901201.2421
StabilityStability Stable, but reacts violently with water, alcohols, metals, sodium, potassium, ammonia, oxidizing agents, HF, peroxides, magnesium, strong bases.
Cosmetics Ingredients FunctionsBUFFERING
CHELATING
InChI1S/O10P4/c1-11-5-12(2)8-13(3,6-11)10-14(4,7-11)9-12
InChIKeyYWEUIGNSBFLMFL-UHFFFAOYSA-N
SMILESO=P12OP3(=O)OP(=O)(O1)OP(=O)(O2)O3
CAS DataBase Reference1314-56-3(CAS DataBase Reference)
NIST Chemistry ReferenceDiphosphorus pentoxide(1314-56-3)
EPA Substance Registry SystemPhosphorus pentoxide (1314-56-3)


Safety Information


Hazard CodesC
Risk Statements35
Safety Statements22-26-45
RIDADRUN 1807 8/PG 2
WGK Germany1
RTECSTH3945000
F46091
TSCATSCA listed
HS Code2809 10 00
HazardClass8
PackingGroupII
Storage Class8A - Combustible corrosive hazardous materials
Hazard ClassificationsEye Dam. 1
Skin Corr. 1A
Hazardous Substances Data1314-56-3(Hazardous Substances Data)


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