Phosphorus Pentoxide
P₄O₁₀Cite "Phosphorus Pentoxide"
Phosphorus Pentoxide. (n.d.). In Compound. Retrieved from /compound/phosphorus-pentoxide/
"Phosphorus Pentoxide." Compound, /compound/phosphorus-pentoxide/.
@misc{phosphorus-pentoxide, title={Phosphorus Pentoxide}, url={/compound/phosphorus-pentoxide/}}
IUPAC: Phosphorus(V) oxide
CAS: 1314-56-3
Overview
Phosphorus pentoxide is the most powerful desiccant (drying agent) known. It is so hygroscopic that it reacts violently with water, producing phosphoric acid and considerable heat. It is used to dry gases and solvents and as a dehydrating agent in organic synthesis.
Composition
| Element | Symbol | Atoms | Atomic Mass |
|---|---|---|---|
| Oxygen | O | 10 | 15.9990 |
| Phosphorus | P | 4 | 30.9740 |
Elemental Composition
P
Phosphorus
×4
43.6%
Uses
- • Powerful desiccant
- • Dehydrating agent in organic synthesis
- • Phosphoric acid production
- • Drying gases
Fun Facts
- ✦ Can dry solvents to less than 1 ppm water content
- ✦ The molecular formula is P₄O₁₀, not P₂O₅ as commonly written
Safety
- ⚠ Reacts violently with water
- ⚠ Corrosive
- ⚠ Causes severe burns
Structure
SMILES
O=P(=O)OP(=O)=O
Properties
- Type
- oxide
- State
- solid
- Molar Mass
- 283.89 g/mol
- Density
- 2.3900 g/cm³
- Melting Point
- 340.0 °C
- Boiling Point
- 360.0 °C
- Solubility
- decomposes violently
Molecular Descriptors
- Exact Mass
- 141.9221
- XLogP
- -2.1
- TPSA
- 77.5 Ų
- H-Bond Donors
- 0
- H-Bond Acceptors
- 5
- Rotatable Bonds
- 0
- Heavy Atoms
- 7
- Complexity
- 123.0
Also Known As
Phosphorus pentoxide
Diphosphorus pentoxide
Frequently Asked Questions
What is Phosphorus Pentoxide?
Phosphorus Pentoxide (P₄O₁₀) is a oxide compound with the IUPAC name Phosphorus(V) oxide.
What is the molecular weight of Phosphorus Pentoxide?
Phosphorus Pentoxide has a molar mass of 283.886 g/mol.
What state is Phosphorus Pentoxide at room temperature?
Phosphorus Pentoxide is a solid at room temperature.
Is Phosphorus Pentoxide organic or inorganic?
Phosphorus Pentoxide is classified as an inorganic compound.
What elements make up Phosphorus Pentoxide?
Phosphorus Pentoxide (P₄O₁₀) is composed of Oxygen (O), Phosphorus (P).