Phosphorus Pentoxide

P₄O₁₀

IUPAC: Phosphorus(V) oxide

CAS: 1314-56-3

概述

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.

组成

元素 符号 原子 原子质量
Oxygen O 10 15.9990
Phosphorus P 4 30.9740

元素组成

O
Oxygen ×10
56.4%
P
Phosphorus ×4
43.6%

用途

  • • Powerful desiccant
  • • Dehydrating agent in organic synthesis
  • • Phosphoric acid production
  • • Drying gases

趣味知识

  • ✦ Can dry solvents to less than 1 ppm water content
  • ✦ The molecular formula is P₄O₁₀, not P₂O₅ as commonly written

安全性

  • ⚠ Reacts violently with water
  • ⚠ Corrosive
  • ⚠ Causes severe burns

Structure

SMILES

O=P(=O)OP(=O)=O

属性

类型
oxide
状态
solid
摩尔质量
283.89 g/mol
密度
2.3900 g/cm³
熔点
340.0 °C
沸点
360.0 °C
溶解度
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

别名

Phosphorus pentoxide Diphosphorus pentoxide

相关化合物

Copper(I) Oxide

Cu₂O

Aluminum Oxide

Al₂O₃

Beryllium Oxide

BeO

Calcium Oxide

CaO

Boron Trioxide

B₂O₃

Copper(II) Oxide

CuO

Molybdenum Trioxide

MoO₃

Magnesium Oxide

MgO

Manganese Dioxide

MnO₂

Cadmium Oxide

CdO

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).