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Phosphorus pentoxide CAS#1314-56-3

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Phosphorus pentoxide CAS#1314-56-3
Phosphorus pentoxide CAS 1314-56-3 is a powerful desiccant and dehydrating agent with high thermal stability for industrial and lab use.

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Product Description

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.

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.

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